diff --git a/xCAT-UI/images/nodes/grey.gif b/xCAT-UI/images/nodes/grey.gif
index f65010c5f..2f1068cf8 100644
Binary files a/xCAT-UI/images/nodes/grey.gif and b/xCAT-UI/images/nodes/grey.gif differ
diff --git a/xCAT-UI/images/nodes/s-grey.gif b/xCAT-UI/images/nodes/s-grey.gif
index 148744b25..13d8a3e1a 100644
Binary files a/xCAT-UI/images/nodes/s-grey.gif and b/xCAT-UI/images/nodes/s-grey.gif differ
diff --git a/xCAT-UI/js/nodes/physical.js b/xCAT-UI/js/nodes/physical.js
index b4e1b00bb..32101d48c 100644
--- a/xCAT-UI/js/nodes/physical.js
+++ b/xCAT-UI/js/nodes/physical.js
@@ -139,6 +139,10 @@ function fillList(nodeName){
 	var mtm = graphicalNodeList[nodeName]['mtm'];
 	var status = graphicalNodeList[nodeName]['status']; 
 	
+	if ('' == status){
+		status = 'unknown';
+	}
+	
 	switch(graphicalNodeList[nodeName]['type']){
 		case 'bpa': {
 			if (undefined == bpaList[nodeName]){