diff --git a/js/models/PList.js b/js/models/PList.js
index 2282c3807248aa71badcaa0db9db2add4f50fe0d..417484a7fc1fb613788f14ecdcce94479a964977 100644
--- a/js/models/PList.js
+++ b/js/models/PList.js
@@ -89,8 +89,8 @@ define(['three'], function(THREE){
         },
 
         allMaterialClasses:{
-            electronic: "Electronic",
-            mechanical: "Structural"
+            mechanical: "Structural",
+            electronic: "Electronic"
         },
 
         allMaterials:{