diff --git a/step-02/js/main.js b/step-02/js/main.js
index a0e10ff..e8978eb 100644
--- a/step-02/js/main.js
+++ b/step-02/js/main.js
@@ -214,9 +214,15 @@ function callAction() {
   if (videoTracks.length > 0) {
     trace(`Using video device: ${videoTracks[0].label}.`);
   }
+  else{
+    trace('Not using video device.');
+  }
   if (audioTracks.length > 0) {
     trace(`Using audio device: ${audioTracks[0].label}.`);
   }
+  else{
+    trace('Not using audio device.');
+  }
 
   const servers = null;  // Allows for RTC server configuration.