diff --git a/labs/bbb-webrtc-sfu/lib/mcs-core/lib/media/media-server.js b/labs/bbb-webrtc-sfu/lib/mcs-core/lib/media/media-server.js
index 1d5c6593aada90545be334a9379c1f94187640a2..472badd7c372c6c84fc2faeda7abf9c627750198 100644
--- a/labs/bbb-webrtc-sfu/lib/mcs-core/lib/media/media-server.js
+++ b/labs/bbb-webrtc-sfu/lib/mcs-core/lib/media/media-server.js
@@ -327,7 +327,7 @@ module.exports = class MediaServer extends EventEmitter {
 
   _handleError(error) {
     // Checking if the error needs to be wrapped into a JS Error instance
-    if(!isError(error)) {
+    if(!this.isError(error)) {
       error = new Error(error);
     }