diff --git a/openvidu-browser/src/OpenVidu/Publisher.ts b/openvidu-browser/src/OpenVidu/Publisher.ts
index 2cf11e18..0ee8363d 100644
--- a/openvidu-browser/src/OpenVidu/Publisher.ts
+++ b/openvidu-browser/src/OpenVidu/Publisher.ts
@@ -610,8 +610,7 @@ export class Publisher extends StreamManager {
             this.openvidu.generateMediaConstraints(this.properties)
                 .then(myConstraints => {
 
-                    if (myConstraints.constraints === undefined ||
-                      !!myConstraints.videoTrack && !!myConstraints.audioTrack ||
+                    if (!!myConstraints.videoTrack && !!myConstraints.audioTrack ||
                       !!myConstraints.audioTrack && myConstraints.constraints?.video === false ||
                       !!myConstraints.videoTrack && myConstraints.constraints?.audio === false) {
                         // No need to call getUserMedia at all. MediaStreamTracks already provided
diff --git a/openvidu-browser/src/OpenViduInternal/Interfaces/Private/CustomMediaStreamConstraints.ts b/openvidu-browser/src/OpenViduInternal/Interfaces/Private/CustomMediaStreamConstraints.ts
index dcc518f3..121181bb 100644
--- a/openvidu-browser/src/OpenViduInternal/Interfaces/Private/CustomMediaStreamConstraints.ts
+++ b/openvidu-browser/src/OpenViduInternal/Interfaces/Private/CustomMediaStreamConstraints.ts
@@ -16,7 +16,7 @@
  */
 
 export interface CustomMediaStreamConstraints {
-    constraints: MediaStreamConstraints | undefined;
+    constraints: MediaStreamConstraints;
     audioTrack: MediaStreamTrack | undefined;
     videoTrack: MediaStreamTrack | undefined;
 }
\ No newline at end of file