diff --git a/NEWS b/NEWS
index 73ba8a62..fb206083 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,4 @@
+  - fixed status-header for cache_modified_check under cgi-sapi (messju)
   - added optional parameter $cache_attrs to register_function() and
     register_block(). $cache_attrs is an array containing attribute-
     names that should be cached on calls to functions that have
diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 229969ec..53db8d92 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -1271,7 +1271,11 @@ class Smarty
                         if (@count($this->_cache_info['insert_tags']) == 0
                             && !$this->_cache_serials
                             && $_gmt_mtime == $_last_modified_date) {
-                            header("HTTP/1.1 304 Not Modified");
+                            if (php_sapi_name()=='cgi')
+                                header("Status: 304 Not Modified");
+                            else
+                                header("HTTP/1.1 304 Not Modified");
+
                         } else {
                             header("Last-Modified: ".$_gmt_mtime);
                             echo $_smarty_results;