diff --git a/change_log.txt b/change_log.txt
index 26f76818..70cd842f 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,4 +1,7 @@
 ===== trunk  =====
+30.03.2012
+- bugfix template inheritance did  not throw exception when a parent template was deleted (issue 90)
+
 27.03.2012
 - bugfix prefilter did run multiple times on inline subtemplates compiled into several main templates (Forum Topic 21325)
 - bugfix implement Smarty2's behaviour of variables assigned by reference in SmartyBC. {assign} will affect all references.
diff --git a/libs/sysplugins/smarty_internal_template.php b/libs/sysplugins/smarty_internal_template.php
index 447ff3c9..1a75fd4f 100644
--- a/libs/sysplugins/smarty_internal_template.php
+++ b/libs/sysplugins/smarty_internal_template.php
@@ -442,7 +442,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase {
                         $mtime = $this->source->timestamp;
                     } else {
                         // file and php types can be checked without loading the respective resource handlers
-                        $mtime = filemtime($_file_to_check[0]);
+                        $mtime = @filemtime($_file_to_check[0]);
                     }
                 } elseif ($_file_to_check[2] == 'string') {
                     continue;
@@ -450,7 +450,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase {
                     $source = Smarty_Resource::source(null, $this->smarty, $_file_to_check[0]);
                     $mtime = $source->timestamp;
                 }
-                if ($mtime > $_file_to_check[1]) {
+                if (!$mtime || $mtime > $_file_to_check[1]) {
                     $is_valid = false;
                     break;
                 }