diff --git a/uptime_kuma_api/api.py b/uptime_kuma_api/api.py
index 9013d98..5de7fa7 100644
--- a/uptime_kuma_api/api.py
+++ b/uptime_kuma_api/api.py
@@ -502,14 +502,14 @@ class UptimeKumaApi(object):
     def _call(self, event, data=None) -> Any:
         try:
             r = self.sio.call(event, data, timeout=self.timeout)
-            r.pop("ok")
         except socketio.exceptions.TimeoutError:
             raise Timeout(f"Timed out while waiting for event {event}")
-        except Exception as e:
-            raise UptimeKumaException(r.get("msg"))
-        
+        if isinstance(r, dict) and "ok" in r:
+            if not r["ok"]:
+                raise UptimeKumaException(r.get("msg"))
+            r.pop("ok")
         return r
-
+        
     # event handlers
 
     def _event_connect(self) -> None: