diff --git a/src/Internat.h b/src/Internat.h
index 89eb92bee..3c0eb6675 100644
--- a/src/Internat.h
+++ b/src/Internat.h
@@ -42,7 +42,7 @@ extern AUDACITY_DLL_API const wxString& GetCustomSubstitution(const wxString& st
    // Force a crash if you misuse _ in a static initializer, so that translation
    // is looked up too early and not found.
 
-   #ifdef _MSC_VER
+   #ifdef __WXMSW__
 
    #define _(s) ((wxTranslations::Get() || (DebugBreak(), true)), \
                 GetCustomTranslation((s)))