diff --git a/res/res_pjsip_refer.c b/res/res_pjsip_refer.c
index 797f25719c..06ea0b65b5 100644
--- a/res/res_pjsip_refer.c
+++ b/res/res_pjsip_refer.c
@@ -20,6 +20,7 @@
 	<depend>pjproject</depend>
 	<depend>res_pjsip</depend>
 	<depend>res_pjsip_session</depend>
+	<depend>res_pjsip_pubsub</depend>
 	<support_level>core</support_level>
  ***/