diff --git a/js/plugins/IconDescription.js b/js/plugins/IconDescription.js
index 0e976cc..50eaeec 100644
--- a/js/plugins/IconDescription.js
+++ b/js/plugins/IconDescription.js
@@ -137,6 +137,9 @@
     const param = PluginManagerEx.createParameter(script);
 
     function findIconCaptionParam(iconIndex) {
+        if (!param.list || !Array.isArray(param.list)) {
+            return null;
+        }
         return param.list.find(desc => desc.iconIndex === iconIndex);
     }
 
diff --git a/package.json b/package.json
index 6961b9a..1db396e 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
     "name": "rmmz-game",
     "main": "index.html",
-    "chromium-args": "--force-color-profile=srgb --disable-devtools",
+    "chromium-args": "--force-color-profile=srgb",
     "window": {
         "title": "Unholy maiden Ver.1.0.4",
         "width": 1280,