--- a/src/http/ngx_http.c
+++ b/src/http/ngx_http.c
@@ -589,23 +589,26 @@ static char *ngx_http_block(ngx_conf_t *
         }
     }
 
-    /* DEBUG STUFF */
+#if (NGX_DEBUG)
     in_port = in_ports.elts;
     for (p = 0; p < in_ports.nelts; p++) {
-ngx_log_debug(cf->log, "port: %d %08x" _ in_port[p].port _ &in_port[p]);
+        ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
+                      "port: %d %08x", in_port[p].port, &in_port[p]);
         in_addr = in_port[p].addrs.elts;
         for (a = 0; a < in_port[p].addrs.nelts; a++) {
             char ip[20];
             ngx_inet_ntop(AF_INET, (char *) &in_addr[a].addr, ip, 20);
-ngx_log_debug(cf->log, "%s %08x" _ ip _ in_addr[a].core_srv_conf);
+            ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
+                           "%s %08x", ip, in_addr[a].core_srv_conf);
             s_name = in_addr[a].names.elts;
             for (n = 0; n < in_addr[a].names.nelts; n++) {
-ngx_log_debug(cf->log, "%s %08x" _ s_name[n].name.data _
-              s_name[n].core_srv_conf);
+                 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
+                                "%s %08x", s_name[n].name.data,
+                                s_name[n].core_srv_conf);
             }
         }
     }
-    /**/
+#endif
 
     return NGX_CONF_OK;
 }