diff --git a/src/components/daily/EditCheckboxModal.tsx b/src/components/daily/EditCheckboxModal.tsx
index fe35cc0..8f24fe2 100644
--- a/src/components/daily/EditCheckboxModal.tsx
+++ b/src/components/daily/EditCheckboxModal.tsx
@@ -58,11 +58,17 @@ export function EditCheckboxModal({
     }
   }, [taskId, allTasks]);
 
-  // Filtrer les tâches selon la recherche
-  const filteredTasks = allTasks.filter(task => 
-    task.title.toLowerCase().includes(taskSearch.toLowerCase()) ||
-    (task.description && task.description.toLowerCase().includes(taskSearch.toLowerCase()))
-  );
+  // Filtrer les tâches selon la recherche et exclure les tâches avec des tags "objectif principal"
+  const filteredTasks = allTasks.filter(task => {
+    // Exclure les tâches avec des tags marqués comme "objectif principal" (isPinned = true)
+    if (task.tagDetails && task.tagDetails.some(tag => tag.isPinned)) {
+      return false;
+    }
+    
+    // Filtrer selon la recherche
+    return task.title.toLowerCase().includes(taskSearch.toLowerCase()) ||
+           (task.description && task.description.toLowerCase().includes(taskSearch.toLowerCase()));
+  });
 
   const handleTaskSelect = (task: Task) => {
     setTaskId(task.id);
diff --git a/src/lib/types.ts b/src/lib/types.ts
index 5effd99..7881ad0 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -42,6 +42,7 @@ export interface Task {
   source: TaskSource;
   sourceId?: string;
   tags: string[];
+  tagDetails?: Tag[]; // Tags avec informations complètes (isPinned, etc.)
   dueDate?: Date;
   completedAt?: Date;
   createdAt: Date;
diff --git a/src/services/task-management/tasks.ts b/src/services/task-management/tasks.ts
index 78be152..3def691 100644
--- a/src/services/task-management/tasks.ts
+++ b/src/services/task-management/tasks.ts
@@ -1,5 +1,5 @@
 import { prisma } from '@/services/core/database';
-import { Task, TaskStatus, TaskPriority, TaskSource, BusinessError, DailyCheckbox, DailyCheckboxType } from '@/lib/types';
+import { Task, TaskStatus, TaskPriority, TaskSource, BusinessError, DailyCheckbox, DailyCheckboxType, Tag } from '@/lib/types';
 import { Prisma } from '@prisma/client';
 import { getToday } from '@/lib/date-utils';
 
@@ -358,12 +358,19 @@ export class TasksService {
       }
     }
   }> | Prisma.TaskGetPayload<object>): Task {
-    // Extraire les tags depuis les relations TaskTag ou fallback sur tagsJson
+    // Extraire les tags depuis les relations TaskTag
     let tags: string[] = [];
+    let tagDetails: Tag[] = [];
     
     if ('taskTags' in prismaTask && prismaTask.taskTags && Array.isArray(prismaTask.taskTags)) {
-      // Utiliser les relations Prisma
+      // Utiliser les relations Prisma pour récupérer les noms et détails des tags
       tags = prismaTask.taskTags.map((tt) => tt.tag.name);
+      tagDetails = prismaTask.taskTags.map((tt) => ({
+        id: tt.tag.id,
+        name: tt.tag.name,
+        color: tt.tag.color,
+        isPinned: tt.tag.isPinned
+      }));
     }
 
     // Extraire le count des todos
@@ -381,6 +388,7 @@ export class TasksService {
       source: prismaTask.source as TaskSource,
       sourceId: prismaTask.sourceId ?? undefined,
       tags: tags,
+      tagDetails: tagDetails,
       dueDate: prismaTask.dueDate ?? undefined,
       completedAt: prismaTask.completedAt ?? undefined,
       createdAt: prismaTask.createdAt,