diff --git a/src/screens/whiteboard-screen/index.js b/src/screens/whiteboard-screen/index.js
index cb2f8dd0..cd260828 100644
--- a/src/screens/whiteboard-screen/index.js
+++ b/src/screens/whiteboard-screen/index.js
@@ -17,9 +17,12 @@ const WhiteboardScreen = () => {
   useEffect(() => {
     // don't resize screen when keyboard shows
     setAdjustPan();
+    if (!joinUrl) {
+      return;
+    }
 
     const url = new URL(joinUrl);
-    const getJoinUrlWithEnforceLayout = `https://${url.host}/bigbluebutton/api/getJoinUrl?sessionToken=${url.searchParams.get('sessionToken')}&enforceLayout=presentationOnly`;
+    const getJoinUrlWithEnforceLayout = `https://${url.host}/bigbluebutton/api/getJoinUrl?sessionToken=${url.searchParams?.get('sessionToken')}&enforceLayout=presentationOnly`;
 
     axios.get(getJoinUrlWithEnforceLayout).then((response) => {
       const apiResponse = response.data.response;