diff --git a/strings/base_fast_forward.h b/strings/base_fast_forward.h
index a73e70a04..dc89fe6ce 100644
--- a/strings/base_fast_forward.h
+++ b/strings/base_fast_forward.h
@@ -30,11 +30,7 @@ static_assert(WINRT_FAST_ABI_SIZE >= %);
 
 #pragma detect_mismatch("WINRT_FAST_ABI_SIZE", WINRT_IMPL_STRING(WINRT_FAST_ABI_SIZE))
 
-#ifndef WINRT_EXPORT
-#define WINRT_EXPORT
-#endif // WINRT_EXPORT
-
-WINRT_EXPORT namespace winrt::impl
+namespace winrt::impl
 {
     // Thunk definitions are in arch-specific assembly sources
 %