diff --git a/src/os/unix/ngx_process_cycle.h b/src/os/unix/ngx_process_cycle.h
index f46ad46..e6cef6b 100644
--- a/src/os/unix/ngx_process_cycle.h
+++ b/src/os/unix/ngx_process_cycle.h
@@ -21,8 +21,9 @@
 
 #define NGX_PROCESS_SINGLE     0
 #define NGX_PROCESS_MASTER     1
-#define NGX_PROCESS_WORKER     2
-#define NGX_PROCESS_SIGNALLER  3
+#define NGX_PROCESS_SIGNALLER  2
+#define NGX_PROCESS_WORKER     3
+#define NGX_PROCESS_HELPER     4
 
 
 typedef struct {