diff --git a/kuser/kuser_locl.h b/kuser/kuser_locl.h
index 8d0972d87..8e11cce9e 100644
--- a/kuser/kuser_locl.h
+++ b/kuser/kuser_locl.h
@@ -19,6 +19,15 @@
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
 #include <roken.h>
 #include <krb5.h>