diff --git a/src/win-d3d-fs.cc b/src/win-d3d-fs.cc
index 90bc38e8c..4f5a93d31 100644
--- a/src/win-d3d-fs.cc
+++ b/src/win-d3d-fs.cc
@@ -1,4 +1,6 @@
 #include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
 #define BITMAP WINDOWS_BITMAP
 #include <d3d9.h>
 #undef BITMAP