diff --git a/Telegram/SourceFiles/platform/win/windows_dlls.h b/Telegram/SourceFiles/platform/win/windows_dlls.h
index 9ebed92fc..6ed503c8d 100644
--- a/Telegram/SourceFiles/platform/win/windows_dlls.h
+++ b/Telegram/SourceFiles/platform/win/windows_dlls.h
@@ -16,10 +16,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <RestartManager.h>
 #include <psapi.h>
 
-#ifdef __MINGW32__
-#define __in
-#endif
-
 namespace Platform {
 namespace Dlls {