diff --git a/htdocs/adherents/card_subscriptions.php b/htdocs/adherents/card_subscriptions.php
index 38d32e7b78d..ea2ce80d6ca 100644
--- a/htdocs/adherents/card_subscriptions.php
+++ b/htdocs/adherents/card_subscriptions.php
@@ -212,7 +212,15 @@ if ($user->rights->adherent->cotisation->creer && $action == 'cotisation' && ! $
     if (! $datecotisation)
     {
         $error++;
-        $errmsg=$langs->trans("BadDateFormat");
+        $langs->load("errors");
+        $errmsg=$langs->trans("ErrorBadDateFormat",$langs->transnoentitiesnoconv("DateSubscription"));
+        $action='addsubscription';
+    }
+    if (GETPOST('end') && ! $datesubend)
+    {
+        $error++;
+        $langs->load("errors");
+        $errmsg=$langs->trans("ErrorBadDateFormat",$langs->transnoentitiesnoconv("DateEndSubscription"));
         $action='addsubscription';
     }
     if (! $datesubend)
diff --git a/htdocs/core/class/translate.class.php b/htdocs/core/class/translate.class.php
index bcc3ae0adc8..f1f707a658f 100644
--- a/htdocs/core/class/translate.class.php
+++ b/htdocs/core/class/translate.class.php
@@ -391,11 +391,12 @@ class Translate {
 	 */
 	function trans($key, $param1='', $param2='', $param3='', $param4='', $maxsize=0)
 	{
-		if (! empty($this->tab_translate[$key]))	// Translation is available
+	    if (! empty($this->tab_translate[$key]))	// Translation is available
 		{
             $str=$this->tab_translate[$key];
 
-			if (! preg_match('/^Format/',$key)) $str=sprintf($str,$param1,$param2,$param3,$param4);	// Replace %s and %d except for FormatXXX strings.
+            if (! preg_match('/^Format/',$key)) $str=sprintf($str,$param1,$param2,$param3,$param4);	// Replace %s and %d except for FormatXXX strings.
+
 			if ($maxsize) $str=dol_trunc($str,$maxsize);
 
 			// We replace some HTML tags by __xx__ to avoid having them encoded by htmlentities