diff --git a/src/http/modules/ngx_http_referer_module.c b/src/http/modules/ngx_http_referer_module.c
index 0076e94..40d9682 100644
--- a/src/http/modules/ngx_http_referer_module.c
+++ b/src/http/modules/ngx_http_referer_module.c
@@ -242,6 +242,10 @@
         return NGX_CONF_ERROR;
     }
 
+#if (NGX_PCRE)
+    conf->regex = NGX_CONF_UNSET_PTR;
+#endif
+
     conf->no_referer = NGX_CONF_UNSET;
     conf->blocked_referer = NGX_CONF_UNSET;
 
@@ -260,6 +264,7 @@
     if (conf->keys == NULL) {
         conf->hash = prev->hash;
 
+        ngx_conf_merge_ptr_value(conf->regex, prev->regex, NULL);
         ngx_conf_merge_value(conf->no_referer, prev->no_referer, 0);
         ngx_conf_merge_value(conf->blocked_referer, prev->blocked_referer, 0);
 
@@ -335,6 +340,8 @@
         conf->hash.wc_tail = (ngx_hash_wildcard_t *) hash.hash;
     }
 
+    ngx_conf_merge_ptr_value(conf->regex, prev->regex, NULL);
+
     if (conf->no_referer == NGX_CONF_UNSET) {
         conf->no_referer = 0;
     }
@@ -513,7 +520,7 @@
     ngx_http_referer_regex_t  *rr;
     u_char                     errstr[NGX_MAX_CONF_ERRSTR];
 
-    if (rlcf->regex == NULL) {
+    if (rlcf->regex == NGX_CONF_UNSET_PTR) {
         rlcf->regex = ngx_array_create(cf->pool, 2,
                                        sizeof(ngx_http_referer_regex_t));
         if (rlcf->regex == NULL) {