diff --git a/uppsrc/Skylark/App.cpp b/uppsrc/Skylark/App.cpp
index fc569a4d6..cc1f19b70 100644
--- a/uppsrc/Skylark/App.cpp
+++ b/uppsrc/Skylark/App.cpp
@@ -20,7 +20,7 @@ namespace Ini {
 };
 
 #ifdef PLATFORM_WIN32
-BOOL WINAPI SkylarkApp::CtrlCHandlerRoutine(__in  DWORD dwCtrlType)
+BOOL WINAPI SkylarkApp::CtrlCHandlerRoutine(DWORD dwCtrlType)
 {
 	LOG("Ctrl+C handler");
 	TheApp().quit = true;
diff --git a/uppsrc/Skylark/Skylark.h b/uppsrc/Skylark/Skylark.h
index 0b809d0f1..d803f8ab5 100644
--- a/uppsrc/Skylark/Skylark.h
+++ b/uppsrc/Skylark/Skylark.h
@@ -74,7 +74,7 @@ class SkylarkApp : protected SkylarkConfig {
 	static SkylarkApp *app;
 
 #ifdef PLATFORM_WIN32
-	static BOOL WINAPI CtrlCHandlerRoutine(__in  DWORD dwCtrlType);
+	static BOOL WINAPI CtrlCHandlerRoutine(DWORD dwCtrlType);
 #endif
 
 	typedef SkylarkApp CLASSNAME;