diff --git a/src/arcologyBuilding/penthouse.js b/src/arcologyBuilding/penthouse.js
index 9f810a8cf8f9f996dcc9ccfb2f191d3fb2727cc5..3b151dcd3dd38985e94453f51195dc9d6f5cdf56 100644
--- a/src/arcologyBuilding/penthouse.js
+++ b/src/arcologyBuilding/penthouse.js
@@ -67,7 +67,7 @@ App.Arcology.Cell.Penthouse = class extends App.Arcology.Cell.BaseCell {
 			const desc = `(${numberWithPluralOne(inc.capacity - V.tanks.length, "empty tank")})`;
 
 			if (V.readySlaves > 0) {
-				wrapper.append(createFacilityDiv(link, desc, App.UI.DOM.makeElement("span", "[!]", "noteworthy")));
+				wrapper.append(createFacilityDiv(link, App.UI.DOM.combineNodes(desc, App.UI.DOM.makeElement("span", "[!]", "noteworthy"))));
 			} else {
 				wrapper.append(createFacilityDiv(link, desc));
 			}