diff --git a/change_log.txt b/change_log.txt
index e3f53ff6..aeb17e4d 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,4 +1,8 @@
 ===== 3.1.34-dev-6 =====
+30.10.2018
+ - bugfix a nested subblock in an inheritance child template was not replace by
+   outer level block with same name in same child template https://github.com/smarty-php/smarty/issues/500
+
 29.10.2018
  - bugfix Smarty::$php_handling == PHP_PASSTHRU (default) did eat the "\n" (newline) character if it did directly followed
    a PHP tag like "?>" or other https://github.com/smarty-php/smarty/issues/501
diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index f0757284..44b77a85 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -112,7 +112,7 @@ class Smarty extends Smarty_Internal_TemplateBase
     /**
      * smarty version
      */
-    const SMARTY_VERSION = '3.1.34-dev-6';
+    const SMARTY_VERSION = '3.1.34-dev-7';
     /**
      * define variable scopes
      */
diff --git a/libs/sysplugins/smarty_internal_runtime_inheritance.php b/libs/sysplugins/smarty_internal_runtime_inheritance.php
index 6392d4cb..8f7f02d5 100644
--- a/libs/sysplugins/smarty_internal_runtime_inheritance.php
+++ b/libs/sysplugins/smarty_internal_runtime_inheritance.php
@@ -150,7 +150,7 @@ class Smarty_Internal_Runtime_Inheritance
             return;
         }
         // make sure we got child block of child template of current block
-        while ($block->child && $block->tplIndex <= $block->child->tplIndex) {
+        while ($block->child && $block->child->child && $block->tplIndex <= $block->child->tplIndex) {
             $block->child = $block->child->child;
         }
         $this->process($tpl, $block);