diff --git a/app/components/malio/checkbox/Checkbox.test.ts b/app/components/malio/checkbox/Checkbox.test.ts
index c291ced..579c88b 100644
--- a/app/components/malio/checkbox/Checkbox.test.ts
+++ b/app/components/malio/checkbox/Checkbox.test.ts
@@ -17,6 +17,7 @@ type CheckboxProps = {
   hint?: string
   error?: string
   success?: string
+  reserveMessageSpace?: boolean
 }
 
 const CheckboxForTest = Checkbox as DefineComponent<CheckboxProps>
@@ -171,4 +172,23 @@ describe('MalioCheckbox', () => {
     const wrapper = mountCheckbox({label: 'Champ'})
     expect(wrapper.find('[data-test="required-mark"]').exists()).toBe(false)
   })
+
+  it('réserve l’espace message par défaut même sans message', () => {
+    const wrapper = mountCheckbox({label: 'Champ'})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).toContain('min-h-[1rem]')
+  })
+
+  it('reserveMessageSpace=false sans message : pas de ligne réservée', () => {
+    const wrapper = mountCheckbox({label: 'Champ', reserveMessageSpace: false})
+    expect(wrapper.find('[id$="-describedby"]').exists()).toBe(false)
+  })
+
+  it('reserveMessageSpace=false avec message : ligne rendue sans min-h', () => {
+    const wrapper = mountCheckbox({label: 'Champ', reserveMessageSpace: false, error: 'Erreur'})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).not.toContain('min-h-[1rem]')
+  })
 })
diff --git a/app/components/malio/checkbox/Checkbox.vue b/app/components/malio/checkbox/Checkbox.vue
index b4de360..73ba5eb 100644
--- a/app/components/malio/checkbox/Checkbox.vue
+++ b/app/components/malio/checkbox/Checkbox.vue
@@ -30,6 +30,7 @@
     </label>
 
     <p
+      v-if="reserveMessageSpace || hint || error || success"
       :id="`${inputId}-describedby`"
       :class="mergedMessageClass"
     >
@@ -60,6 +61,7 @@ const props = withDefaults(
     hint?: string
     error?: string
     success?: string
+    reserveMessageSpace?: boolean
   }>(),
   {
     id: '',
@@ -75,6 +77,7 @@ const props = withDefaults(
     hint: '',
     error: '',
     success: '',
+    reserveMessageSpace: true,
   },
 )
 
@@ -121,7 +124,8 @@ const mergedLabelClass = computed(() =>
 
 const mergedMessageClass = computed(() =>
   twMerge(
-    'text-xs min-h-[1rem]',
+    'text-xs',
+    props.reserveMessageSpace ? 'min-h-[1rem]' : '',
     hasError.value
       ? 'text-m-danger'
       : hasSuccess.value
diff --git a/app/components/malio/date/Date.test.ts b/app/components/malio/date/Date.test.ts
index 25c6f30..e10dbb9 100644
--- a/app/components/malio/date/Date.test.ts
+++ b/app/components/malio/date/Date.test.ts
@@ -21,6 +21,7 @@ type DateProps = {
   inputClass?: string
   labelClass?: string
   groupClass?: string
+  reserveMessageSpace?: boolean
 }
 
 const DateForTest = Date_ as DefineComponent<DateProps>
@@ -236,4 +237,25 @@ describe('MalioDate', () => {
       expect(input.value).toBe('25/12/2026')
     })
   })
+
+  describe('reserveMessageSpace', () => {
+    it('réserve l’espace message par défaut même sans message', () => {
+      const wrapper = mountDate({label: 'Champ'})
+      const msg = wrapper.find('[id$="-describedby"]')
+      expect(msg.exists()).toBe(true)
+      expect(msg.classes()).toContain('min-h-[1rem]')
+    })
+
+    it('reserveMessageSpace=false sans message : pas de ligne réservée', () => {
+      const wrapper = mountDate({label: 'Champ', reserveMessageSpace: false})
+      expect(wrapper.find('[id$="-describedby"]').exists()).toBe(false)
+    })
+
+    it('reserveMessageSpace=false avec message : ligne rendue sans min-h', () => {
+      const wrapper = mountDate({label: 'Champ', reserveMessageSpace: false, error: 'Erreur'})
+      const msg = wrapper.find('[id$="-describedby"]')
+      expect(msg.exists()).toBe(true)
+      expect(msg.classes()).not.toContain('min-h-[1rem]')
+    })
+  })
 })
diff --git a/app/components/malio/date/internal/CalendarField.vue b/app/components/malio/date/internal/CalendarField.vue
index 4f50dfe..35d02e1 100644
--- a/app/components/malio/date/internal/CalendarField.vue
+++ b/app/components/malio/date/internal/CalendarField.vue
@@ -85,10 +85,12 @@
     </div>
 
     <p
+      v-if="reserveMessageSpace || hint || error || success"
       :id="`${inputId}-describedby`"
       :class="[
         hasError ? 'text-m-danger' : hasSuccess ? 'text-m-success' : 'text-m-muted',
-        'mt-1 ml-[2px] text-xs min-h-[1rem]',
+        'mt-1 ml-[2px] text-xs',
+        reserveMessageSpace ? 'min-h-[1rem]' : '',
       ]"
     >
       {{ error || success || hint }}
@@ -126,6 +128,7 @@ const props = withDefaults(
     inputClass?: string
     labelClass?: string
     groupClass?: string
+    reserveMessageSpace?: boolean
   }>(),
   {
     id: '',
@@ -142,6 +145,7 @@ const props = withDefaults(
     inputClass: '',
     labelClass: '',
     groupClass: '',
+    reserveMessageSpace: true,
   },
 )
 
diff --git a/app/components/malio/select/Select.test.ts b/app/components/malio/select/Select.test.ts
index 387dcee..14bba66 100644
--- a/app/components/malio/select/Select.test.ts
+++ b/app/components/malio/select/Select.test.ts
@@ -23,6 +23,7 @@ type SelectProps = {
   disabled?: boolean
   readonly?: boolean
   required?: boolean
+  reserveMessageSpace?: boolean
 }
 
 const SelectForTest = Select as DefineComponent<SelectProps>
@@ -359,4 +360,23 @@ describe('MalioSelect', () => {
     expect(trigger.attributes('aria-readonly')).toBeUndefined()
     expect(trigger.attributes('disabled')).toBeDefined()
   })
+
+  it('réserve l’espace message par défaut même sans message', () => {
+    const wrapper = mount(SelectForTest, {props: {modelValue: null, label: 'Champ', options}})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).toContain('min-h-[1rem]')
+  })
+
+  it('reserveMessageSpace=false sans message : pas de ligne réservée', () => {
+    const wrapper = mount(SelectForTest, {props: {modelValue: null, label: 'Champ', options, reserveMessageSpace: false}})
+    expect(wrapper.find('[id$="-describedby"]').exists()).toBe(false)
+  })
+
+  it('reserveMessageSpace=false avec message : ligne rendue sans min-h', () => {
+    const wrapper = mount(SelectForTest, {props: {modelValue: null, label: 'Champ', options, reserveMessageSpace: false, error: 'Erreur'}})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).not.toContain('min-h-[1rem]')
+  })
 })
diff --git a/app/components/malio/select/Select.vue b/app/components/malio/select/Select.vue
index 83d8d1c..809313d 100644
--- a/app/components/malio/select/Select.vue
+++ b/app/components/malio/select/Select.vue
@@ -166,6 +166,7 @@
     </ul>
     </div>
     <p
+      v-if="reserveMessageSpace || hint || error || success"
       :id="`${buttonId}-describedby`"
       :class="[
         hasError
@@ -173,7 +174,8 @@
           : hasSuccess
             ? 'text-m-success'
             : 'text-m-muted',
-        'mt-1 ml-[2px] text-xs min-h-[1rem]',
+        'mt-1 ml-[2px] text-xs',
+        reserveMessageSpace ? 'min-h-[1rem]' : '',
       ]"
     >
       {{ error || success || hint }}
@@ -210,6 +212,7 @@ const props = withDefaults(defineProps<{
   groupClass?: string
   noOptionsText?: string
   required?: boolean
+  reserveMessageSpace?: boolean
 }>(), {
   options: () => [],
   emptyOptionLabel: '',
@@ -226,6 +229,7 @@ const props = withDefaults(defineProps<{
   groupClass: '',
   noOptionsText: 'Aucune option disponible',
   required: false,
+  reserveMessageSpace: true,
 })
 
 const emit = defineEmits<{
diff --git a/app/components/malio/select/SelectCheckbox.test.ts b/app/components/malio/select/SelectCheckbox.test.ts
index 350b881..9b8df40 100644
--- a/app/components/malio/select/SelectCheckbox.test.ts
+++ b/app/components/malio/select/SelectCheckbox.test.ts
@@ -27,6 +27,7 @@ type SelectCheckboxProps = {
   readonly?: boolean
   groupClass?: string
   required?: boolean
+  reserveMessageSpace?: boolean
 }
 
 const SelectCheckboxForTest = SelectCheckbox as DefineComponent<SelectCheckboxProps>
@@ -346,4 +347,23 @@ describe('MalioSelectCheckbox', () => {
     expect(trigger.attributes('aria-readonly')).toBeUndefined()
     expect(trigger.attributes('disabled')).toBeDefined()
   })
+
+  it('réserve l’espace message par défaut même sans message', () => {
+    const wrapper = mount(SelectCheckboxForTest, {props: {label: 'Champ', options}})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).toContain('min-h-[1rem]')
+  })
+
+  it('reserveMessageSpace=false sans message : pas de ligne réservée', () => {
+    const wrapper = mount(SelectCheckboxForTest, {props: {label: 'Champ', options, reserveMessageSpace: false}})
+    expect(wrapper.find('[id$="-describedby"]').exists()).toBe(false)
+  })
+
+  it('reserveMessageSpace=false avec message : ligne rendue sans min-h', () => {
+    const wrapper = mount(SelectCheckboxForTest, {props: {label: 'Champ', options, reserveMessageSpace: false, error: 'Erreur'}})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).not.toContain('min-h-[1rem]')
+  })
 })
diff --git a/app/components/malio/select/SelectCheckbox.vue b/app/components/malio/select/SelectCheckbox.vue
index a0f8364..3c33262 100644
--- a/app/components/malio/select/SelectCheckbox.vue
+++ b/app/components/malio/select/SelectCheckbox.vue
@@ -215,6 +215,7 @@
     </ul>
     </div>
     <p
+      v-if="reserveMessageSpace || hint || error || success"
       :id="`${buttonId}-describedby`"
       :class="[
         hasError
@@ -222,7 +223,8 @@
           : hasSuccess
             ? 'text-m-success'
             : 'text-m-muted',
-        'mt-1 ml-[2px] text-xs min-h-[1rem]',
+        'mt-1 ml-[2px] text-xs',
+        reserveMessageSpace ? 'min-h-[1rem]' : '',
       ]"
     >
       {{ error || success || hint }}
@@ -263,6 +265,7 @@ const props = withDefaults(defineProps<{
   groupClass?: string
   noOptionsText?: string
   required?: boolean
+  reserveMessageSpace?: boolean
 }>(), {
   modelValue: () => [],
   options: () => [],
@@ -283,6 +286,7 @@ const props = withDefaults(defineProps<{
   groupClass: '',
   noOptionsText: 'Aucune option disponible',
   required: false,
+  reserveMessageSpace: true,
 })
 
 const emit = defineEmits<{
diff --git a/app/components/malio/time/Time.test.ts b/app/components/malio/time/Time.test.ts
index 39188ec..833cba2 100644
--- a/app/components/malio/time/Time.test.ts
+++ b/app/components/malio/time/Time.test.ts
@@ -17,6 +17,7 @@ type TimeProps = {
   hint?: string
   error?: string
   success?: string
+  reserveMessageSpace?: boolean
 }
 
 const TimeForTest = Time as DefineComponent<TimeProps>
@@ -86,4 +87,23 @@ describe('MalioTime', () => {
     const wrapper = mountTime({label: 'Champ'})
     expect(wrapper.find('[data-test="required-mark"]').exists()).toBe(false)
   })
+
+  it('réserve l’espace message par défaut même sans message', () => {
+    const wrapper = mountTime({label: 'Champ'})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).toContain('min-h-[1rem]')
+  })
+
+  it('reserveMessageSpace=false sans message : pas de ligne réservée', () => {
+    const wrapper = mountTime({label: 'Champ', reserveMessageSpace: false})
+    expect(wrapper.find('[id$="-describedby"]').exists()).toBe(false)
+  })
+
+  it('reserveMessageSpace=false avec message : ligne rendue sans min-h', () => {
+    const wrapper = mountTime({label: 'Champ', reserveMessageSpace: false, error: 'Erreur'})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).not.toContain('min-h-[1rem]')
+  })
 })
diff --git a/app/components/malio/time/Time.vue b/app/components/malio/time/Time.vue
index 3297331..2584670 100644
--- a/app/components/malio/time/Time.vue
+++ b/app/components/malio/time/Time.vue
@@ -58,6 +58,7 @@
     </div>
 
     <p
+      v-if="reserveMessageSpace || hint || error || success"
       :id="`${inputId}-describedby`"
       :class="[
         hasError
@@ -65,7 +66,8 @@
           : hasSuccess
             ? 'text-m-success'
             : 'text-m-muted',
-        'mt-1 ml-[2px] text-xs min-h-[1rem]',
+        'mt-1 ml-[2px] text-xs',
+        reserveMessageSpace ? 'min-h-[1rem]' : '',
       ]"
     >
       {{ error || success || hint }}
@@ -95,6 +97,7 @@ const props = withDefaults(
     hint?: string
     error?: string
     success?: string
+    reserveMessageSpace?: boolean
   }>(),
   {
     id: '',
@@ -110,6 +113,7 @@ const props = withDefaults(
     hint: '',
     error: '',
     success: '',
+    reserveMessageSpace: true,
   },
 )
 
diff --git a/app/components/malio/time/TimePicker.test.ts b/app/components/malio/time/TimePicker.test.ts
index 3ce2926..6039f8c 100644
--- a/app/components/malio/time/TimePicker.test.ts
+++ b/app/components/malio/time/TimePicker.test.ts
@@ -19,6 +19,7 @@ type TimePickerProps = {
   inputClass?: string
   labelClass?: string
   groupClass?: string
+  reserveMessageSpace?: boolean
 }
 
 const TimePickerForTest = TimePicker as DefineComponent<TimePickerProps>
@@ -120,4 +121,23 @@ describe('MalioTimePicker', () => {
     expect(label.classes()).toContain('text-black')
     expect(icon.classes()).toContain('text-black')
   })
+
+  it('réserve l’espace message par défaut même sans message', () => {
+    const wrapper = mountPicker({label: 'Champ'})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).toContain('min-h-[1rem]')
+  })
+
+  it('reserveMessageSpace=false sans message : pas de ligne réservée', () => {
+    const wrapper = mountPicker({label: 'Champ', reserveMessageSpace: false})
+    expect(wrapper.find('[id$="-describedby"]').exists()).toBe(false)
+  })
+
+  it('reserveMessageSpace=false avec message : ligne rendue sans min-h', () => {
+    const wrapper = mountPicker({label: 'Champ', reserveMessageSpace: false, error: 'Erreur'})
+    const msg = wrapper.find('[id$="-describedby"]')
+    expect(msg.exists()).toBe(true)
+    expect(msg.classes()).not.toContain('min-h-[1rem]')
+  })
 })
diff --git a/app/components/malio/time/TimePicker.vue b/app/components/malio/time/TimePicker.vue
index c13304c..fb1209f 100644
--- a/app/components/malio/time/TimePicker.vue
+++ b/app/components/malio/time/TimePicker.vue
@@ -78,10 +78,12 @@
     </div>
 
     <p
+      v-if="reserveMessageSpace || hint || error || success"
       :id="`${inputId}-describedby`"
       :class="[
         hasError ? 'text-m-danger' : hasSuccess ? 'text-m-success' : 'text-m-muted',
-        'mt-1 ml-[2px] text-xs min-h-[1rem]',
+        'mt-1 ml-[2px] text-xs',
+        reserveMessageSpace ? 'min-h-[1rem]' : '',
       ]"
     >
       {{ error || success || hint }}
@@ -116,6 +118,7 @@ const props = withDefaults(
     inputClass?: string
     labelClass?: string
     groupClass?: string
+    reserveMessageSpace?: boolean
   }>(),
   {
     id: '',
@@ -134,6 +137,7 @@ const props = withDefaults(
     inputClass: '',
     labelClass: '',
     groupClass: '',
+    reserveMessageSpace: true,
   },
 )