diff --git a/base/modules/cutil.c b/base/modules/cutil.c
index 094911931..2eac4e1c9 100644
--- a/base/modules/cutil.c
+++ b/base/modules/cutil.c
@@ -1,4 +1,4 @@
-#ifdef WIN32
+#ifdef _WIN32
 #include <time.h>
 #include <windows.h>
 #else
diff --git a/base/modules/fakempi.c b/base/modules/fakempi.c
index 22666c9bd..f0e8a5d1b 100644
--- a/base/modules/fakempi.c
+++ b/base/modules/fakempi.c
@@ -1,6 +1,6 @@
 #include <stdio.h>
 #include <string.h>
-#ifdef WIN32
+#ifdef _WIN32
 #include <time.h>
 #include <windows.h>
 #include "gettimeofday.h"