diff --git a/packages/react-native/React/Base/RCTBridge.mm b/packages/react-native/React/Base/RCTBridge.mm
index 661f8f0fa64..6a6fd4a61af 100644
--- a/packages/react-native/React/Base/RCTBridge.mm
+++ b/packages/react-native/React/Base/RCTBridge.mm
@@ -36,9 +36,11 @@
 NSArray<Class> *RCTGetModuleClasses(void)
 {
   __block NSArray<Class> *result;
+#ifndef RCT_REMOVE_LEGACY_ARCH
   dispatch_sync(RCTModuleClassesSyncQueue, ^{
     result = [RCTModuleClasses copy];
   });
+#endif
   return result;
 }