diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index d9fff391c19..68f81f8abcd 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -9933,6 +9933,9 @@ function getCommonSubstitutionArray($outputlangs, $onlykey = 0, $exclude = null,
 			'__YEAR__' => (string) $tmp['year'],
 			'__PREVIOUS_DAY__' => (string) $tmp2['day'],
 			'__PREVIOUS_MONTH__' => (string) $tmp3['month'],
+			'__PREVIOUS_MONTH_TEXT__' => $outputlangs->trans('Month'.sprintf("%02d", $tmp3['month'])),
+			'__PREVIOUS_MONTH_TEXT_SHORT__' => $outputlangs->trans('MonthShort'.sprintf("%02d", $tmp3['month'])),
+			'__PREVIOUS_MONTH_TEXT_MIN__' => $outputlangs->trans('MonthVeryShort'.sprintf("%02d", $tmp3['month'])),
 			'__PREVIOUS_YEAR__' => (string) ($tmp['year'] - 1),
 			'__NEXT_DAY__' => (string) $tmp4['day'],
 			'__NEXT_MONTH__' => (string) $tmp5['month'],