diff --git a/webrtc/webrtc.php b/webrtc/webrtc.php
index 259a7a91..993f984f 100644
--- a/webrtc/webrtc.php
+++ b/webrtc/webrtc.php
@@ -56,7 +56,7 @@ function webrtc_content(): string
 	$webrtcurl = DI::config()->get('webrtc','webrtcurl');
 
 		/* open the landing page in a new browser window without controls */
-		$o .= '<script>
+		$o = '<script>
 					window.open("' . $webrtcurl . '", "_blank", "toolbar=no,scrollbars=no,resizable=no,top=100,left=100,width=740,height=740");
 				</script>';