diff --git a/lib/controllers/client_controller.dart b/lib/controllers/client_controller.dart
index f04dd41..d888162 100644
--- a/lib/controllers/client_controller.dart
+++ b/lib/controllers/client_controller.dart
@@ -160,7 +160,10 @@ class ClientController extends AsyncNotifier<int> {
     calloc.free(bufferPointer);
 
     final json = response.buf.toJson();
-    if (json is String) throw json;
+    if (response.command.cast<Utf8>().toDartString() == "error") {
+      throw json;
+    }
+
     return json;
   }