diff --git a/windows/winsftp.c b/windows/winsftp.c
index 60551c99..525f0bf2 100644
--- a/windows/winsftp.c
+++ b/windows/winsftp.c
@@ -8,6 +8,7 @@
 #include "psftp.h"
 #include "ssh.h"
 #include "int64.h"
+#include "winsecur.h"
 
 char *get_ttymode(void *frontend, const char *mode) { return NULL; }