diff --git a/src/app/schemas/poses.py b/src/app/schemas/poses.py
index 94ade39a..c4aa02ad 100644
--- a/src/app/schemas/poses.py
+++ b/src/app/schemas/poses.py
@@ -18,7 +18,7 @@
 
 class PoseBase(BaseModel):
     azimuth: float = Field(..., ge=0, lt=360, description="Azimuth of the centre of the position in degrees")
-    patrol_id: Optional[int] = Field(None, gt=0, description="External patrol identifier")
+    patrol_id: Optional[int] = Field(None, ge=0, description="External patrol identifier")
 
 
 class PoseCreate(PoseBase):
@@ -27,7 +27,7 @@ class PoseCreate(PoseBase):
 
 class PoseUpdate(BaseModel):
     azimuth: Optional[float] = Field(None, ge=0, lt=360, description="Azimuth of the centre of the position in degrees")
-    patrol_id: Optional[int] = Field(None, gt=0, description="External patrol identifier")
+    patrol_id: Optional[int] = Field(None, ge=0, description="External patrol identifier")
 
 
 class PoseImage(BaseModel):