diff --git a/frontend/components/project/ProjectGroupTab.vue b/frontend/components/project/ProjectGroupTab.vue
index f107caf..45047d1 100644
--- a/frontend/components/project/ProjectGroupTab.vue
+++ b/frontend/components/project/ProjectGroupTab.vue
@@ -36,7 +36,7 @@
                 />
             </template>
             <template #cell-description="{ item }">
-                {{ item.description ?? '—' }}
+                {{ stripRichText(item.description) || '—' }}
             </template>
             <template #actions="{ item }">
                 <MalioButton
@@ -71,6 +71,7 @@ import type { TaskGroup } from '~/services/dto/task-group'
 import type { Task } from '~/services/dto/task'
 import { useTaskGroupService } from '~/services/task-groups'
 import { useTaskService } from '~/services/tasks'
+import { stripRichText } from '~/utils/format'
 
 const props = defineProps<{
     projectId: number
diff --git a/frontend/components/time-tracking/TimeEntryList.vue b/frontend/components/time-tracking/TimeEntryList.vue
index fb5a23e..a727593 100644
--- a/frontend/components/time-tracking/TimeEntryList.vue
+++ b/frontend/components/time-tracking/TimeEntryList.vue
@@ -33,8 +33,8 @@
                 </div>
                 <div class="mt-0.5 flex items-center gap-2 text-xs text-neutral-500">
                     <span v-if="entry.project">{{ entry.project.name }}</span>
-                    <span v-if="entry.project && entry.description" class="text-neutral-300">·</span>
-                    <span v-if="entry.description" class="truncate">{{ entry.description }}</span>
+                    <span v-if="entry.project && stripRichText(entry.description)" class="text-neutral-300">·</span>
+                    <span v-if="stripRichText(entry.description)" class="truncate">{{ stripRichText(entry.description) }}</span>
                 </div>
             </div>
 
@@ -68,6 +68,7 @@
 
 <script setup lang="ts">
 import type { TimeEntry } from '~/services/dto/time-entry'
+import { stripRichText } from '~/utils/format'
 
 const props = defineProps<{
     entries: TimeEntry[]
diff --git a/frontend/utils/format.ts b/frontend/utils/format.ts
index 9f0c5ef..bd6a8a4 100644
--- a/frontend/utils/format.ts
+++ b/frontend/utils/format.ts
@@ -3,3 +3,17 @@ export function formatFileSize(bytes: number): string {
     if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(0)} Ko`
     return `${(bytes / (1024 * 1024)).toFixed(1)} Mo`
 }
+
+export function stripRichText(value: string | null | undefined): string {
+    if (!value) return ''
+    return value
+        .replace(/<[^>]+>/g, ' ')
+        .replace(/&nbsp;/gi, ' ')
+        .replace(/&amp;/gi, '&')
+        .replace(/&lt;/gi, '<')
+        .replace(/&gt;/gi, '>')
+        .replace(/&quot;/gi, '"')
+        .replace(/&#39;|&apos;/gi, '\'')
+        .replace(/\s+/g, ' ')
+        .trim()
+}
diff --git a/src/Service/CalDavService.php b/src/Service/CalDavService.php
index bcaf3a0..cd56476 100644
--- a/src/Service/CalDavService.php
+++ b/src/Service/CalDavService.php
@@ -14,6 +14,9 @@ use Sabre\VObject\Component\VCalendar;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
 use Throwable;
 
+use const ENT_HTML5;
+use const ENT_QUOTES;
+
 final class CalDavService
 {
     public function __construct(
@@ -199,7 +202,7 @@ final class CalDavService
         $project     = $task->getProject();
         $projectCode = null !== $project ? $project->getCode() : '';
         $summary     = sprintf('[%s-%s] %s', $projectCode, $task->getNumber(), $task->getTitle());
-        $description = ($task->getDescription() ?? '')."\n\nLesstime task";
+        $description = $this->descriptionToPlainText($task->getDescription())."\n\nLesstime task";
 
         $vcalendar = new VCalendar();
         $vcalendar->add('VEVENT', [
@@ -225,7 +228,7 @@ final class CalDavService
         $project     = $task->getProject();
         $projectCode = null !== $project ? $project->getCode() : '';
         $summary     = sprintf('[%s-%s] %s (deadline)', $projectCode, $task->getNumber(), $task->getTitle());
-        $description = ($task->getDescription() ?? '')."\n\nLesstime task";
+        $description = $this->descriptionToPlainText($task->getDescription())."\n\nLesstime task";
 
         $vcalendar = new VCalendar();
         $vcalendar->add('VTODO', [
@@ -337,6 +340,18 @@ final class CalDavService
         return sprintf('%s@lesstime', bin2hex(random_bytes(16)));
     }
 
+    private function descriptionToPlainText(?string $value): string
+    {
+        if (null === $value || '' === $value) {
+            return '';
+        }
+
+        $stripped = strip_tags($value);
+        $decoded  = html_entity_decode($stripped, ENT_QUOTES | ENT_HTML5, 'UTF-8');
+
+        return trim((string) preg_replace('/[ \t]+/', ' ', $decoded));
+    }
+
     /** @return array<string, string> */
     private function getDayMap(): array
     {