--- a/src/core/ngx_core.h
+++ b/src/core/ngx_core.h
@@ -19,7 +19,6 @@ typedef struct ngx_open_file_s   ngx_ope
 typedef struct ngx_command_s     ngx_command_t;
 typedef struct ngx_file_s        ngx_file_t;
 typedef struct ngx_event_s       ngx_event_t;
-typedef struct ngx_peers_s       ngx_peers_t;
 typedef struct ngx_connection_s  ngx_connection_t;
 
 typedef void (*ngx_event_handler_pt)(ngx_event_t *ev);