diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tmpl b/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tmpl
index ca486e1c8f..3c3cef30b3 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tmpl
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tmpl
@@ -644,7 +644,7 @@
       <label for="cardnumber">
     <!-- /TMPL_IF--> 
     Card number: </label>
-    <input type="text" id="cardnumber" name="cardnumber" size="10" value="<!-- TMPL_VAR NAME="cardnumber" -->" />
+    <input type="text" id="cardnumber" name="cardnumber" size="20" value="<!-- TMPL_VAR NAME="cardnumber" -->" />
 	  <!-- TMPL_IF NAME="mandatorycardnumber" --><span class="required">Required</span><!-- /TMPL_IF --></li>
     <li>
       <!-- TMPL_IF NAME="mandatorybranchcode" -->