diff --git a/src/libnetconf.h b/src/libnetconf.h
index 575f84b..1002f5f 100644
--- a/src/libnetconf.h
+++ b/src/libnetconf.h
@@ -468,6 +468,7 @@
  * - nc_ps_new()
  * - nc_ps_add_session()
  * - nc_ps_del_session()
+ * - nc_ps_session_count()
  * - nc_ps_free()
  *
  * - nc_ps_poll()