diff --git a/src/os/unix/ngx_socket.h b/src/os/unix/ngx_socket.h
index 34449d0..c6eb941 100644
--- a/src/os/unix/ngx_socket.h
+++ b/src/os/unix/ngx_socket.h
@@ -15,7 +15,7 @@
 
 typedef int  ngx_socket_t;
 
-#define ngx_socket(af, type, proto, flags)   socket(af, type, proto)
+#define ngx_socket          socket
 #define ngx_socket_n        "socket()"