diff --git a/src/core/manager.h b/src/core/manager.h
index 19df889dd8..e6359199f6 100644
--- a/src/core/manager.h
+++ b/src/core/manager.h
@@ -537,7 +537,7 @@ void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now);
 int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc);
 
 void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now);
-int manager_ref_gid(Manager *m, gid_t gid, bool destroy_now);
+int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc);
 
 char *manager_taint_string(Manager *m);