diff --git a/src/event/ngx_event.h b/src/event/ngx_event.h
index db2dc59b3..1748e9a64 100644
--- a/src/event/ngx_event.h
+++ b/src/event/ngx_event.h
@@ -128,7 +128,7 @@ NGX_CLOSE_EVENT            kqueue: kqueue deletes events for file that closed
 #define NGX_LEVEL_EVENT    0
 #define NGX_ONESHOT_EVENT  1
 
-#endif
+#endif /* HAVE_KQUEUE */
 
 #if (USE_KQUEUE)