diff --git a/src/tools/vmap4_extractor/vmapexport.cpp b/src/tools/vmap4_extractor/vmapexport.cpp
index 52f4983f8..2b00673a3 100644
--- a/src/tools/vmap4_extractor/vmapexport.cpp
+++ b/src/tools/vmap4_extractor/vmapexport.cpp
@@ -23,7 +23,7 @@
 #include <sys/stat.h>
 #include <vector>
 
-#ifdef WIN32
+#if defined(WIN32) || defined(_WIN32)
 #include <Windows.h>
 #include <direct.h>
 #define mkdir _mkdir