diff --git a/app/models/pin.py b/app/models/pin.py
index 12c4591..ce81c71 100644
--- a/app/models/pin.py
+++ b/app/models/pin.py
@@ -1,13 +1,19 @@
 from typing import Optional, List
-from pydantic import BaseModel
+from pydantic import BaseModel, Field, validator
 from datetime import datetime
 
 class Pin(BaseModel):
     id: Optional[str]
-    title: str
-    description: str
-    location: list
-    complete_address: str
+    title: str = Field(..., min_length=3)
+    description: str = Field(..., min_length=3)
+    location: list = Field(..., min_items=2)
+    complete_address: str = Field(..., min_length=3)
     files: Optional[List[str]] = []  # Liste des IDs d'images
     user_id: str
-    date: Optional[datetime] = None
\ No newline at end of file
+    date: Optional[datetime] = None
+
+    @validator('location')
+    def validate_location(cls, v):
+        if not v or len(v) == 0:
+            raise ValueError('La location ne peut pas être vide')
+        return v
\ No newline at end of file