diff --git a/utils/common/mstristrip.cpp b/utils/common/mstristrip.cpp
index ad6ebdc8..a9be9dd8 100644
--- a/utils/common/mstristrip.cpp
+++ b/utils/common/mstristrip.cpp
@@ -21,6 +21,8 @@
 
 #include <stdio.h>
 #include <stdarg.h>
+#include <string.h>
+#include <limits.h>
 #include <algorithm>
 #include <list>
 #include <vector>
diff --git a/utils/vvis_launcher/vvis_launcher.cpp b/utils/vvis_launcher/vvis_launcher.cpp
index ea4ea68f..ceec54c4 100644
--- a/utils/vvis_launcher/vvis_launcher.cpp
+++ b/utils/vvis_launcher/vvis_launcher.cpp
@@ -12,6 +12,7 @@
 #include "stdafx.h"
 #include <direct.h>
 #else
+#include <stdio.h>
 #include <dlfcn.h>
 #endif
 #include "tier1/interface.h"