diff --git a/ddimport.js b/ddimport.js
index 5146cdc..be56d45 100644
--- a/ddimport.js
+++ b/ddimport.js
@@ -97,6 +97,7 @@ class DDImporter {
     let alldoors = [];
     for (let index in file.world.levels[level].walls)
     {
+      if (isNaN(index)) continue
       let wallSet = []
       let ddWalls = file.world.levels[level].walls[index]
       let ddPointString = ddWalls.points;
diff --git a/module.json b/module.json
index 95f36a4..3c66d38 100644
--- a/module.json
+++ b/module.json
@@ -2,7 +2,7 @@
   "name": "dd-import",
   "title": "DungeonDraft Importer",
   "description": "Imports scene elements from Dungeon Draft map files",
-  "version": "0.4.15",
+  "version": "0.4.16",
   "authors": [
     {
       "name": "Moo Man"