diff --git a/QuickLook.Plugin/QuickLook.Plugin.HelixViewer/Plugin.cs b/QuickLook.Plugin/QuickLook.Plugin.HelixViewer/Plugin.cs
index 16fc1bf..e51f752 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.HelixViewer/Plugin.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.HelixViewer/Plugin.cs
@@ -41,7 +41,7 @@ public class Plugin : IViewer
 #endif
 
         // Extended_MMD
-        ".pmx",
+        //".pmx",
     ]);
 
     private HelixPanel _hp;