diff --git a/mqtt_client.go b/mqtt_client.go
index 6e018b7..9f1b2b4 100644
--- a/mqtt_client.go
+++ b/mqtt_client.go
@@ -99,7 +99,7 @@ func messageHandler(client mqtt.Client, msg mqtt.Message) {
 		return
 	}
 
-	// Check for duplicates keys
+	
 	var exists int
 	existsQuery := `SELECT 1 FROM temp_live_readings WHERE created_at = $1 AND mfm_meter_id = $2 LIMIT 1`
 	err = db.QueryRow(existsQuery, payload.CreatedAt, mfmMeterID).Scan(&exists)