diff --git a/src/views/GuildroomPage/GuildroomPageView.tsx b/src/views/GuildroomPage/GuildroomPageView.tsx
index 93ba376..3b98ec0 100644
--- a/src/views/GuildroomPage/GuildroomPageView.tsx
+++ b/src/views/GuildroomPage/GuildroomPageView.tsx
@@ -38,7 +38,9 @@ const GuildroomView = () => {
 
   useEffect(() => {
     setStatus(false);
-    setClient(mqtt.connect(`ws://${process.env.NEXT_PUBLIC_MQTT_HOST}`));
+    if (process.env.NEXT_PUBLIC_MQTT_HOST) {
+      setClient(mqtt.connect(`ws://${process.env.NEXT_PUBLIC_MQTT_HOST}`));
+    }
   }, []);
 
   useEffect(() => {