diff --git a/htdocs/core/tpl/admin_extrafields_add.tpl.php b/htdocs/core/tpl/admin_extrafields_add.tpl.php
index bdced5118679e..56cca5af04fb6 100644
--- a/htdocs/core/tpl/admin_extrafields_add.tpl.php
+++ b/htdocs/core/tpl/admin_extrafields_add.tpl.php
@@ -87,8 +87,8 @@ function init_typeoffields(type)
 </td>
 <td>
 <table class="nobordernopadding">
-<tr><td width="30%">
-	<textarea name="param" id="param"><?php echo GETPOST('param'); ?></textarea>
+<tr><td>
+	<textarea name="param" id="param" cols="80" rwos="<?php echo ROWS_4 ?>"><?php echo GETPOST('param'); ?></textarea>
 </td><td id="helpselect"><?php print $form->textwithpicto('', $langs->trans("ExtrafieldParamHelpselect"),1,0)?></td>
 <td id="helpsellist"><?php print $form->textwithpicto('', $langs->trans("ExtrafieldParamHelpsellist"),1,0)?></td></tr>
 </table>
diff --git a/htdocs/core/tpl/admin_extrafields_edit.tpl.php b/htdocs/core/tpl/admin_extrafields_edit.tpl.php
index dcf1af56ed166..493634c84a5d7 100644
--- a/htdocs/core/tpl/admin_extrafields_edit.tpl.php
+++ b/htdocs/core/tpl/admin_extrafields_edit.tpl.php
@@ -98,8 +98,8 @@ function init_typeoffields(type)
 </td>
 <td>
 <table class="nobordernopadding">
-<tr><td width="30%">
-	<textarea name="param" id="param"><?php echo $param_chain; ?></textarea>
+<tr><td>
+	<textarea name="param" id="param" cols="80" rows="<?php echo ROWS_4 ?>"><?php echo $param_chain; ?></textarea>
 </td><td><?php print $form->textwithpicto('', $langs->trans("ExtrafieldParamHelp".$type),1,0)?></td></tr>
 </table>
 </td>