diff --git a/kpasswd/kpasswd_locl.h b/kpasswd/kpasswd_locl.h
index 18a67e2b0..730415447 100644
--- a/kpasswd/kpasswd_locl.h
+++ b/kpasswd/kpasswd_locl.h
@@ -83,6 +83,7 @@
 #endif
 #include <err.h>
 #include <roken.h>
+#include <getarg.h>
 #include <krb5.h>
 
 #define KPASSWD_PORT 464