diff --git a/admin/admin_locl.h b/admin/admin_locl.h
index 6f7a69651..eca04703d 100644
--- a/admin/admin_locl.h
+++ b/admin/admin_locl.h
@@ -10,6 +10,7 @@
 #endif
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <krb5.h>