diff --git a/influxdb_api.py b/influxdb_api.py
index 849f630..c0ed113 100644
--- a/influxdb_api.py
+++ b/influxdb_api.py
@@ -1518,7 +1518,7 @@ def query_SCADA_data_by_device_ID_and_timerange(query_ids_list: List[str], start
 		
         except Exception as e:
             print(f"Error querying InfluxDB for device ID {device_id}: {e}")
-            SCADA_result_dict[device_id] = None
+            SCADA_dict[device_id] = None
 
     client.close()