diff --git a/sachet/server/files/views.py b/sachet/server/files/views.py
index 6a44bb3..e898e8b 100644
--- a/sachet/server/files/views.py
+++ b/sachet/server/files/views.py
@@ -27,6 +27,13 @@ class FilesMetadataAPI(ModelAPI):
 
     @auth_required(required_permissions=(Permissions.DELETE,))
     def delete(self, share_id, auth_user=None):
+        try:
+            uuid.UUID(share_id)
+        except ValueError:
+            return jsonify(dict(
+                status="fail",
+                message=f"Invalid ID: '{share_id}'."
+            ))
         share = Share.query.filter_by(share_id=share_id).first()
         return super().delete(share)