diff --git a/openvidu-browser/src/OpenVidu/Publisher.ts b/openvidu-browser/src/OpenVidu/Publisher.ts
index d502c2dc..32ffa633 100644
--- a/openvidu-browser/src/OpenVidu/Publisher.ts
+++ b/openvidu-browser/src/OpenVidu/Publisher.ts
@@ -81,7 +81,7 @@ export class Publisher extends StreamManager {
     /**
      * @hidden
      */
-    constructor(targEl: string | HTMLElement, properties: PublisherProperties, openvidu: OpenVidu) {
+    constructor(targEl: string | HTMLElement | undefined, properties: PublisherProperties, openvidu: OpenVidu) {
         super(new Stream((!!openvidu.session) ? openvidu.session : new Session(openvidu), { publisherProperties: properties, mediaConstraints: {} }), targEl);
         platform = PlatformUtils.getInstance();
         this.properties = properties;
diff --git a/openvidu-browser/src/OpenVidu/Subscriber.ts b/openvidu-browser/src/OpenVidu/Subscriber.ts
index b6317708..8210b91a 100644
--- a/openvidu-browser/src/OpenVidu/Subscriber.ts
+++ b/openvidu-browser/src/OpenVidu/Subscriber.ts
@@ -40,7 +40,7 @@ export class Subscriber extends StreamManager {
     /**
      * @hidden
      */
-    constructor(stream: Stream, targEl: string | HTMLElement, properties: SubscriberProperties) {
+    constructor(stream: Stream, targEl: string | HTMLElement | undefined, properties: SubscriberProperties) {
         super(stream, targEl);
         this.element = this.targetElement;
         this.stream = stream;