diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
index 48cb334..0d81c12 100644
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -8,6 +8,7 @@
 
 
 extern ngx_module_t ngx_select_module;
+extern ngx_event_module_t ngx_select_module_ctx;
 
 #if (HAVE_KQUEUE)
 #include <ngx_kqueue_module.h>