diff --git a/www/webrtc/index.html b/www/webrtc/index.html
index c39d6c04..78fb905b 100644
--- a/www/webrtc/index.html
+++ b/www/webrtc/index.html
@@ -284,7 +284,7 @@
               ss[o.app].add(o.stream);
             } else {
               let set = new Set();
-              set.add(o.steram);
+              set.add(o.stream);
               ss[o.app] = set;
             }
           }