diff --git a/lib/libc/compat-43/getwd.c b/lib/libc/compat-43/getwd.c
index 280236e522e..5d413a66f09 100644
--- a/lib/libc/compat-43/getwd.c
+++ b/lib/libc/compat-43/getwd.c
@@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$");
 #include <unistd.h>
 #include <errno.h>
 #include <stdio.h>
+#include <string.h>
 
 char *
 getwd(char *buf)