diff --git a/api/src/api/v1/websocket.py b/api/src/api/v1/websocket.py
index 7a0ab90..13f5690 100644
--- a/api/src/api/v1/websocket.py
+++ b/api/src/api/v1/websocket.py
@@ -608,7 +608,7 @@ async def login(websocket: WebSocket, **kwargs) -> int:
 def resolve_cell_key(event_data: dict) -> dict | None:
     data = event_data.get("data")
 
-    if not data:
+    if not data or "line_id" not in data or "column" not in data:
         return None
     return {
         "line_id": data["line_id"],