diff --git a/presentation/lookAndFeel/knowledgeTree/administration/unitmanagement/editUnitBL.php b/presentation/lookAndFeel/knowledgeTree/administration/unitmanagement/editUnitBL.php
index e2a0993..82d4727 100644
--- a/presentation/lookAndFeel/knowledgeTree/administration/unitmanagement/editUnitBL.php
+++ b/presentation/lookAndFeel/knowledgeTree/administration/unitmanagement/editUnitBL.php
@@ -30,7 +30,10 @@ if (checkSession()) {
 		$oUnit = Unit::get($fUnitID);
 		$oUnit->setName($fUnitName);
 		
-		if ($oUnit->update()) {
+		if($fUnitName== "")
+		{
+			$oPatternCustom->setHtml(getEditPageFail());
+		}elseif ($oUnit->update()) {
 				// if successfull print out success message
 				$oPatternCustom->setHtml(getEditPageSuccess());
 				
diff --git a/presentation/lookAndFeel/knowledgeTree/administration/unitmanagement/editUnitUI.inc b/presentation/lookAndFeel/knowledgeTree/administration/unitmanagement/editUnitUI.inc
index f9e744c..dab05a9 100644
--- a/presentation/lookAndFeel/knowledgeTree/administration/unitmanagement/editUnitUI.inc
+++ b/presentation/lookAndFeel/knowledgeTree/administration/unitmanagement/editUnitUI.inc
@@ -65,7 +65,7 @@ function getEditPageFail() {
 	global $default;
 			
 	$sToRender .= "<br></br>\n";
-	$sToRender .= "<b>Success!</b>\n";
+	$sToRender .= "<b>FAILED!</b>\n";
 	$sToRender .= "<table>\n";
 	$sToRender .= "<br></br>\n";
 	$sToRender .= "<tr></tr>\n";