diff --git a/sourcemm/oslink.h b/sourcemm/oslink.h
index 72d4791..2317318 100644
--- a/sourcemm/oslink.h
+++ b/sourcemm/oslink.h
@@ -21,13 +21,12 @@
 	#define OS_WIN32
 	#if defined _MSC_VER && _MSC_VER >= 1400
 		#undef ARRAYSIZE
+	#else
+		#define mkdir(a) _mkdir(a)
 	#endif
 	#include <windows.h>
 	#include <io.h>
 	#include <direct.h>
-	#ifndef mkdir
-		#define mkdir(a) _mkdir(a)
-	#endif
 	#define		dlmount(x)		LoadLibrary(x)
 	#define		dlsym(x, s)		GetProcAddress(x, s)
 	#define		dlclose(x)		FreeLibrary(x)
diff --git a/sourcemm/sample_mm/oslink.h b/sourcemm/sample_mm/oslink.h
index f2c5445..55e5f89 100644
--- a/sourcemm/sample_mm/oslink.h
+++ b/sourcemm/sample_mm/oslink.h
@@ -21,13 +21,12 @@
 	#define OS_WIN32
 	#if defined _MSC_VER && _MSC_VER >= 1400
 		#undef ARRAYSIZE
+	#else
+		#define mkdir(a) _mkdir(a)
 	#endif
 	#include <windows.h>
 	#include <io.h>
 	#include <direct.h>
-	#ifndef mkdir
-		#define mkdir(a) _mkdir(a)
-	#endif
 	#define		dlmount(x)		LoadLibrary(x)
 	#define		dlsym(x, s)		GetProcAddress(x, s)
 	#define		dlclose(x)		FreeLibrary(x)