diff --git a/freeglut/freeglut/src/freeglut_internal.h b/freeglut/freeglut/src/freeglut_internal.h
index 0b26626..121df1a 100644
--- a/freeglut/freeglut/src/freeglut_internal.h
+++ b/freeglut/freeglut/src/freeglut_internal.h
@@ -933,7 +933,7 @@ int fgHintPresent(Window window, Atom property, Atom hint);
 
 SFG_Proc fghGetProcAddress( const char *procName );
 
-#ifdef _WIN32
+#ifdef TARGET_HOST_MS_WINDOWS
 extern void (__cdecl *__glutExitFunc)( int return_value );
 #endif
 
diff --git a/freeglut/freeglut/src/freeglut_window.c b/freeglut/freeglut/src/freeglut_window.c
index 7b73146..6366d0e 100644
--- a/freeglut/freeglut/src/freeglut_window.c
+++ b/freeglut/freeglut/src/freeglut_window.c
@@ -1093,7 +1093,7 @@ int FGAPIENTRY glutCreateWindow( const char* title )
                            GL_FALSE, GL_FALSE )->ID;
 }
 
-#ifdef _WIN32
+#ifdef TARGET_HOST_MS_WINDOWS
 int FGAPIENTRY __glutCreateWindowWithExit( const char *title, void (__cdecl *exit_function)(int) )
 {
   __glutExitFunc = exit_function;