diff --git a/src/http/ngx_http_core_module.h b/src/http/ngx_http_core_module.h
index afceff941..98c276ef1 100644
--- a/src/http/ngx_http_core_module.h
+++ b/src/http/ngx_http_core_module.h
@@ -289,7 +289,9 @@ struct ngx_http_core_loc_conf_s {
 #endif
 
     ngx_http_location_tree_node_t   *static_locations;
+#if (NGX_PCRE)
     ngx_http_core_loc_conf_t       **regex_locations;
+#endif
 
     /* pointer to the modules' loc_conf */
     void        **loc_conf;