diff --git a/src/vs/workbench/contrib/chat/browser/chatParticipantContributions.ts b/src/vs/workbench/contrib/chat/browser/chatParticipantContributions.ts
index 0a70c41549aec..b4d532e3d1894 100644
--- a/src/vs/workbench/contrib/chat/browser/chatParticipantContributions.ts
+++ b/src/vs/workbench/contrib/chat/browser/chatParticipantContributions.ts
@@ -191,7 +191,7 @@ export class ChatExtensionPointHandler implements IWorkbenchContribution {
 
 			for (const extension of delta.removed) {
 				for (const providerDescriptor of extension.value) {
-					this._participantRegistrationDisposables.deleteAndDispose(getParticipantKey(extension.description.identifier, providerDescriptor.name));
+					this._participantRegistrationDisposables.deleteAndDispose(getParticipantKey(extension.description.identifier, providerDescriptor.id));
 				}
 			}
 		});