diff --git a/authd/reslib.c b/authd/reslib.c
index 963679db..59ea43f3 100644
--- a/authd/reslib.c
+++ b/authd/reslib.c
@@ -76,6 +76,8 @@
  * - Dianora
  */
 
+#include <rb_lib.h>
+
 #ifndef _WIN32
 #include <netdb.h>
 #else