diff --git a/src/@types/event.ts b/src/@types/event.ts
index f1f5094f8..56ac83d8a 100644
--- a/src/@types/event.ts
+++ b/src/@types/event.ts
@@ -53,7 +53,8 @@ export enum EventType {
     CallReject = "m.call.reject",
     CallSelectAnswer = "m.call.select_answer",
     CallNegotiate = "m.call.negotiate",
-    CallSDPStreamMetadataChanged = "org.matrix.call.sdp_stream_metadata_changed",
+    CallSDPStreamMetadataChanged = "m.call.sdp_stream_metadata_changed",
+    CallSDPStreamMetadataChangedPrefix = "org.matrix.call.sdp_stream_metadata_changed",
     CallReplaces = "m.call.replaces",
     CallAssertedIdentity = "m.call.asserted_identity",
     CallAssertedIdentityPrefix = "org.matrix.call.asserted_identity",
diff --git a/src/webrtc/call.ts b/src/webrtc/call.ts
index c42ae2d1c..a18ccfae7 100644
--- a/src/webrtc/call.ts
+++ b/src/webrtc/call.ts
@@ -1001,7 +1001,7 @@ export class MatrixCall extends EventEmitter {
     }
 
     private updateMuteStatus() {
-        this.sendVoipEvent(EventType.CallSDPStreamMetadataChanged, {
+        this.sendVoipEvent(EventType.CallSDPStreamMetadataChangedPrefix, {
             [SDPStreamMetadataKey]: this.getLocalSDPStreamMetadata(),
         });
 
diff --git a/src/webrtc/callEventHandler.ts b/src/webrtc/callEventHandler.ts
index fa498e633..96b233e0f 100644
--- a/src/webrtc/callEventHandler.ts
+++ b/src/webrtc/callEventHandler.ts
@@ -297,7 +297,10 @@ export class CallEventHandler {
             }
 
             call.onAssertedIdentityReceived(event);
-        } else if (event.getType() === EventType.CallSDPStreamMetadataChanged) {
+        } else if (
+            event.getType() === EventType.CallSDPStreamMetadataChanged ||
+            event.getType() === EventType.CallSDPStreamMetadataChangedPrefix
+        ) {
             if (!call) return;
 
             if (event.getContent().party_id === call.ourPartyId) {