diff --git a/clinkster/Clinkster/player/clinkster.h b/clinkster/Clinkster/player/clinkster.h
index 811ad79..6999d17 100644
--- a/clinkster/Clinkster/player/clinkster.h
+++ b/clinkster/Clinkster/player/clinkster.h
@@ -5,7 +5,7 @@ struct sample {
 	short left,right;
 };
 
-#ifndef WIN32
+#ifndef _WIN32
 #define __stdcall
 #endif
 
@@ -17,7 +17,7 @@ extern "C" {
 	// and Clinkster_StartMusic can be called.
 	void __stdcall Clinkster_GenerateMusic();
 
-#ifdef WIN32
+#ifdef _WIN32
 	// Play the music
 	void __stdcall Clinkster_StartMusic();