diff --git a/src/MCT.js b/src/MCT.js
index 93d8cdb1b1..46aee49a3b 100644
--- a/src/MCT.js
+++ b/src/MCT.js
@@ -138,6 +138,7 @@ define([
 
     MCT.prototype.regions = {
         main: "MAIN",
+        properties: "PROPERTIES",
         toolbar: "TOOLBAR"
     };