diff --git a/frontend/app/composables/useEntityTypes.ts b/frontend/app/composables/useEntityTypes.ts
index 3b04fbf..92c17e2 100644
--- a/frontend/app/composables/useEntityTypes.ts
+++ b/frontend/app/composables/useEntityTypes.ts
@@ -7,6 +7,7 @@
 
 import { ref, type Ref } from 'vue'
 import { useToast } from './useToast'
+import { useCustomFieldNameSuggestions } from './useCustomFieldNameSuggestions'
 import { humanizeError } from '~/shared/utils/errorMessages'
 import {
   listModelTypes,
@@ -79,6 +80,7 @@ export function invalidateEntityTypeCache(category: ModelCategory) {
 export function useEntityTypes(config: EntityTypeConfig) {
   const { category, label } = config
   const { showSuccess, showError } = useToast()
+  const { invalidate: invalidateCustomFieldNames } = useCustomFieldNameSuggestions()
   const state = getOrCreateState(category)
 
   const normalizeItem = (item: ModelType): EntityType => ({
@@ -124,6 +126,7 @@ export function useEntityTypes(config: EntityTypeConfig) {
       })
       const normalized = normalizeItem(data)
       state.types.value.push(normalized)
+      invalidateCustomFieldNames()
       showSuccess(`Type de ${label} "${data.name}" créé`)
       return { success: true, data: normalized }
     } catch (error) {
@@ -150,6 +153,7 @@ export function useEntityTypes(config: EntityTypeConfig) {
       const normalized = normalizeItem(data)
       const index = state.types.value.findIndex((t) => t.id === id)
       if (index !== -1) state.types.value[index] = normalized
+      invalidateCustomFieldNames()
       showSuccess(`Type de ${label} "${data.name}" mis à jour`)
       return { success: true, data: normalized }
     } catch (error) {
diff --git a/frontend/app/composables/useMachineCustomFieldDefs.ts b/frontend/app/composables/useMachineCustomFieldDefs.ts
index a4e9a94..fccbb54 100644
--- a/frontend/app/composables/useMachineCustomFieldDefs.ts
+++ b/frontend/app/composables/useMachineCustomFieldDefs.ts
@@ -1,5 +1,6 @@
 import { reactive, ref } from 'vue'
 import { useApi } from '~/composables/useApi'
+import { useCustomFieldNameSuggestions } from '~/composables/useCustomFieldNameSuggestions'
 import { useToast } from '~/composables/useToast'
 
 // --- Types ---
@@ -88,6 +89,7 @@ const parseOptions = (optionsText: string): string[] =>
 export function useMachineCustomFieldDefs(deps: Deps) {
   const { apiCall } = useApi()
   const { showSuccess, showError } = useToast()
+  const { invalidate: invalidateCustomFieldNames } = useCustomFieldNameSuggestions()
 
   // --- State ---
 
@@ -294,6 +296,7 @@ export function useMachineCustomFieldDefs(deps: Deps) {
       }
 
       showSuccess('Champs personnalisés sauvegardés avec succès')
+      invalidateCustomFieldNames()
       await deps.onSaved()
     } catch {
       showError('Erreur inattendue lors de la sauvegarde des champs personnalisés')