1 files changed, 1 insertions, 0 deletions

diff --git a/os2.c b/os2.c
index 858213866..e6a1b86d1 100644
--- a/os2.c
+++ b/os2.c
@@ -1,5 +1,6 @@
 #include "stdafx.h"
 #include "ttd.h"
+#include "string.h"
 #include "table/strings.h"
 #include "hal.h"