diff --git a/9.2.md b/9.2.md
index 1c89c26..7580c54 100644
--- a/9.2.md
+++ b/9.2.md
@@ -198,9 +198,9 @@ PHP_FUNCTION(sample_fopen)
     {
     	//存在一个，直接使用！
         ZEND_REGISTER_RESOURCE(return_value,existing_file->ptr, le_sample_descriptor_persist);
-        efree(hash_key);
         return;
     }
+    efree(hash_key);
     
     fp = fopen(filename, mode);
     if (!fp)