diff --git a/examples/tv-casting-app/darwin/MatterTvCastingBridge/MatterTvCastingBridge/CastingServerBridge.mm b/examples/tv-casting-app/darwin/MatterTvCastingBridge/MatterTvCastingBridge/CastingServerBridge.mm
index c7aea7a06a6dc2..c0fecc8073c720 100644
--- a/examples/tv-casting-app/darwin/MatterTvCastingBridge/MatterTvCastingBridge/CastingServerBridge.mm
+++ b/examples/tv-casting-app/darwin/MatterTvCastingBridge/MatterTvCastingBridge/CastingServerBridge.mm
@@ -667,15 +667,13 @@ - (void)disconnect:(dispatch_queue_t _Nonnull)clientQueue requestSentHandler:(nu
 
 - (void)purgeCache:(dispatch_queue_t _Nonnull)clientQueue responseHandler:(void (^)(MatterError * _Nonnull))responseHandler
 {
-    [self dispatchOnMatterSDKQueue:@"purgeCache(...)"
-                             block:^{
-                                 CHIP_ERROR err = CastingServer::GetInstance()->PurgeCache();
-                                 dispatch_async(clientQueue, ^{
-                                     responseHandler(
-                                         [[MatterError alloc] initWithCode:err.AsInteger()
-                                                                   message:[NSString stringWithUTF8String:err.AsString()]]);
-                                 });
-                             }];
+    dispatch_sync(_chipWorkQueue, ^{
+        CHIP_ERROR err = CastingServer::GetInstance()->PurgeCache();
+        dispatch_async(clientQueue, ^{
+            responseHandler([[MatterError alloc] initWithCode:err.AsInteger()
+                                                      message:[NSString stringWithUTF8String:err.AsString()]]);
+        });
+    });
 }
 
 - (void)contentLauncher_launchUrl:(ContentApp * _Nonnull)contentApp