diff --git a/forms/DateField.php b/forms/DateField.php
index e313d3db2..e230db50f 100755
--- a/forms/DateField.php
+++ b/forms/DateField.php
@@ -330,7 +330,7 @@ JS;
 		if(!$valid) {
 			$validator->validationError(
 				$this->name, 
-				_t('DateField.VALIDDATEFORMAT', "Please enter a valid date format (DD/MM/YYYY)."), 
+				_t('DateField.VALIDDATEFORMAT2', sprintf("Please enter a valid date format (%s).", $this->getConfig('dateformat'))), 
 				"validation", 
 				false
 			);
diff --git a/forms/TimeField.php b/forms/TimeField.php
index 2c26391ee..9a90de193 100755
--- a/forms/TimeField.php
+++ b/forms/TimeField.php
@@ -146,7 +146,7 @@ class TimeField extends TextField {
 		if(!Zend_Date::isDate($this->value, $this->getConfig('timeformat'), $this->locale)) {
 			$validator->validationError(
 				$this->name, 
-				_t('DateField.VALIDDATEFORMAT', "Please enter a valid time format."), 
+				_t('TimeField.VALIDDATEFORMAT', sprintf("Please enter a valid time format (%s)", $this->getConfig('timeformat'))), 
 				"validation", 
 				false
 			);
diff --git a/lang/en_US.php b/lang/en_US.php
index d93411de6..509573dd4 100644
--- a/lang/en_US.php
+++ b/lang/en_US.php
@@ -152,6 +152,7 @@ $lang['en_US']['DateField']['NOTSET'] = 'not set';
 $lang['en_US']['DateField']['TODAY'] = 'today';
 $lang['en_US']['DateField']['VALIDATIONJS'] = 'Please enter a valid date format (DD/MM/YYYY).';
 $lang['en_US']['DateField']['VALIDDATEFORMAT'] = 'Please enter a valid time format.';
+$lang['en_US']['DateField']['VALIDDATEFORMAT2'] = 'Please enter a valid time format (%s)';
 $lang['en_US']['DateField']['VALIDDATEMAXDATE'] = 'Your date has to be older or matching the maximum allowed date (%s)';
 $lang['en_US']['DateField']['VALIDDATEMINDATE'] = 'Your date has to be newer or matching the minimum allowed date (%s)';
 $lang['en_US']['DropdownField']['CHOOSE'] = array(
@@ -815,6 +816,7 @@ $lang['en_US']['TableListField_PageControls.ss']['VIEWFIRST'] = 'View first';
 $lang['en_US']['TableListField_PageControls.ss']['VIEWLAST'] = 'View last';
 $lang['en_US']['TableListField_PageControls.ss']['VIEWNEXT'] = 'View next';
 $lang['en_US']['TableListField_PageControls.ss']['VIEWPREVIOUS'] = 'View previous';
+$lang['en_US']['TimeField']['VALIDATEFORMAT'] = 'Please enter a valid time format (%s)';
 $lang['en_US']['ToggleCompositeField.ss']['HIDE'] = 'Hide';
 $lang['en_US']['ToggleCompositeField.ss']['SHOW'] = 'Show';
 $lang['en_US']['ToggleField']['LESS'] = 'less';