diff --git a/change_log.txt b/change_log.txt
index 24bbc016..2fecc013 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,3 +1,6 @@
+12/12/2009
+- fix short append/prepend attributes in {block} tags
+
 12/11/2009
 - bugfix on clear_compiled_tpl (avoid possible warning)
 
diff --git a/libs/sysplugins/smarty_internal_compile_extends.php b/libs/sysplugins/smarty_internal_compile_extends.php
index 7cb54e13..e34efeb6 100644
--- a/libs/sysplugins/smarty_internal_compile_extends.php
+++ b/libs/sysplugins/smarty_internal_compile_extends.php
@@ -69,9 +69,9 @@ class Smarty_Internal_Compile_Extends extends Smarty_Internal_CompileBase {
             } else {
                 $this->smarty->block_data[$_name]['source'] = $block_content;
             } 
-            if (preg_match('/(.?)(append=true)(.*)/', $block_tag, $_match) != 0) {
+            if (preg_match('/(.?)(append)(.*)/', $block_tag, $_match) != 0) {
                 $this->smarty->block_data[$_name]['mode'] = 'append';
-            } elseif (preg_match('/(.?)(prepend=true)(.*)/', $block_tag, $_match) != 0) {
+            } elseif (preg_match('/(.?)(prepend)(.*)/', $block_tag, $_match) != 0) {
                 $this->smarty->block_data[$_name]['mode'] = 'prepend';
             } else {
                 $this->smarty->block_data[$_name]['mode'] = 'replace';
diff --git a/libs/sysplugins/smarty_internal_resource_extends.php b/libs/sysplugins/smarty_internal_resource_extends.php
index 685ff55e..92ccf610 100644
--- a/libs/sysplugins/smarty_internal_resource_extends.php
+++ b/libs/sysplugins/smarty_internal_resource_extends.php
@@ -124,9 +124,9 @@ class Smarty_Internal_Resource_Extends {
             } else {
                 $this->smarty->block_data[$_name]['source'] = $block_content;
             } 
-            if (preg_match('/(.?)(append=true)(.*)/', $block_tag, $_match) != 0) {
+            if (preg_match('/(.?)(append)(.*)/', $block_tag, $_match) != 0) {
                 $this->smarty->block_data[$_name]['mode'] = 'append';
-            } elseif (preg_match('/(.?)(prepend=true)(.*)/', $block_tag, $_match) != 0) {
+            } elseif (preg_match('/(.?)(prepend)(.*)/', $block_tag, $_match) != 0) {
                 $this->smarty->block_data[$_name]['mode'] = 'prepend';
             } else {
                 $this->smarty->block_data[$_name]['mode'] = 'replace';