diff --git a/kuser/kuser_locl.h b/kuser/kuser_locl.h
index 576a7bacf..a4bde2cea 100644
--- a/kuser/kuser_locl.h
+++ b/kuser/kuser_locl.h
@@ -68,6 +68,7 @@
 #include <arpa/inet.h>
 #endif
 #include <roken.h>
+#include <getarg.h>
 #include <krb5.h>
 
 #endif /* __KUSER_LOCL_H__ */