diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index 741a80d..fb02dd4 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -4789,7 +4789,8 @@
         tf[i].name = value[i + 1];
 
         if (tf[i].name.len > 0
-            && tf[i].name.data[tf[i].name.len - 1] == '/')
+            && tf[i].name.data[tf[i].name.len - 1] == '/'
+            && i + 2 < cf->args->nelts)
         {
             tf[i].test_dir = 1;
             tf[i].name.len--;