diff --git a/themes/admin/views/extend/field.php b/themes/admin/views/extend/field.php
index 0f9acd66..90b65e15 100755
--- a/themes/admin/views/extend/field.php
+++ b/themes/admin/views/extend/field.php
@@ -111,7 +111,7 @@
 					<?php $lang = $language['lang']; ?>
 					<div class="tabcontent <?php echo $lang; ?>">
 						<!-- Label -->
-						<input id="label_<?php echo $lang; ?><?php echo $id_extend_field; ?>" name="label_<?php echo $lang; ?>" class="inputtext title w96p" type="text" value="<?php echo $languages[$lang]['label']; ?>"/>
+						<input id="label_<?php echo $lang; ?><?php echo $id_extend_field; ?>" onblur="if ($('nameExtend<?php echo $id_extend_field; ?>').value=='') { $('nameExtend<?php echo $id_extend_field; ?>').value=this.value.replace(' ', '-').toLowerCase(); }" name="label_<?php echo $lang; ?>" class="inputtext title w96p" type="text" value="<?php echo $languages[$lang]['label']; ?>"/>
 					</div>
 				<?php endforeach ;?>
 			</div>
@@ -392,4 +392,4 @@ function()
 
 	updateArticleTypes();
 
-</script>
\ No newline at end of file
+</script>