diff --git a/addons/mail/static/src/models/rtc/rtc.js b/addons/mail/static/src/models/rtc/rtc.js
index e9167f56d7d..2a10cde271f 100644
--- a/addons/mail/static/src/models/rtc/rtc.js
+++ b/addons/mail/static/src/models/rtc/rtc.js
@@ -772,9 +772,12 @@ function factory(dependencies) {
             if (rtcSession) {
                 rtcSession.reset();
             }
-            const peerConnection = this._peerConnections[token];
             const dataChannel = this._dataChannels[token];
-            dataChannel.close();
+            if (dataChannel) {
+                dataChannel.close();
+            }
+            delete this._dataChannels[token];
+            const peerConnection = this._peerConnections[token];
             if (peerConnection) {
                 this._removeRemoteTracks(peerConnection);
                 peerConnection.close();