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-rw-r--r--include/calendar_base.class.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/calendar_base.class.php b/include/calendar_base.class.php
index 7eaa5e22c..020265d17 100644
--- a/include/calendar_base.class.php
+++ b/include/calendar_base.class.php
@@ -360,7 +360,7 @@ GROUP BY period';
if ( !empty($tpl_var) )
{
$existing = $template->smarty->getVariable('chronology_navigation_bars');
- if (! ($existing instanceof Undefined_Smarty_Variable))
+ if (! ($existing instanceof Smarty_Undefined_Variable))
{
$existing->value[ sizeof($existing->value)-1 ] =
array_merge( $existing->value[ sizeof($existing->value)-1 ], $tpl_var);