diff --git a/change_log.txt b/change_log.txt
index 7e14bc27..6a03a7f1 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,4 +1,7 @@
 ===== trunk  =====
+29.12.2011
+- bugfix enable more entropy in Smarty_Internal_Write_File for "more uniqueness" and Cygwin compatibility
+
 28.12.2011
 - bugfix Smarty's internal header code must be excluded from postfilters (issue 71)
 
diff --git a/libs/sysplugins/smarty_internal_write_file.php b/libs/sysplugins/smarty_internal_write_file.php
index 743503b0..2dfb4757 100644
--- a/libs/sysplugins/smarty_internal_write_file.php
+++ b/libs/sysplugins/smarty_internal_write_file.php
@@ -38,7 +38,7 @@ class Smarty_Internal_Write_File {
         }
 
         // write to tmp file, then move to overt file lock race condition
-        $_tmp_file = $_dirpath . DS . uniqid('wrt');
+        $_tmp_file = $_dirpath . DS . uniqid('wrt', true);
         if (!file_put_contents($_tmp_file, $_contents)) {
             error_reporting($_error_reporting);
             throw new SmartyException("unable to write file {$_tmp_file}");