--- a/ngx_http_auth_request_module.c
+++ b/ngx_http_auth_request_module.c
@@ -27,15 +27,17 @@ static void *ngx_http_auth_request_creat
 static char *ngx_http_auth_request_merge_conf(ngx_conf_t *cf,
     void *parent, void *child);
 static ngx_int_t ngx_http_auth_request_init(ngx_conf_t *cf);
+static char *ngx_http_auth_request(ngx_conf_t *cf, ngx_command_t *cmd,
+    void *conf);
 
 
 static ngx_command_t  ngx_http_auth_request_commands[] = {
 
     { ngx_string("auth_request"),
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
-      ngx_conf_set_str_slot,
+      ngx_http_auth_request,
       NGX_HTTP_LOC_CONF_OFFSET,
-      offsetof(ngx_http_auth_request_conf_t, uri),
+      0,
       NULL },
 
       ngx_null_command
@@ -231,3 +233,29 @@ ngx_http_auth_request_init(ngx_conf_t *c
 
     return NGX_OK;
 }
+
+
+static char *
+ngx_http_auth_request(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+    ngx_http_auth_request_conf_t *arcf = conf;
+
+    ngx_str_t        *value;
+
+    if (arcf->uri.data != NULL) {
+        return "is duplicate";
+    }
+
+    value = cf->args->elts;
+
+    if (ngx_strcmp(value[1].data, "off") == 0) {
+        arcf->uri.len = 0;
+        arcf->uri.data = (u_char *) "";
+
+        return NGX_CONF_OK;
+    }
+
+    arcf->uri = value[1];
+
+    return NGX_CONF_OK;
+}