diff --git a/Assets/VRM/Editor/Format/vrmAssetPostprocessor.cs b/Assets/VRM/Editor/Format/vrmAssetPostprocessor.cs
index 264bf69a6..bdafda9d5 100644
--- a/Assets/VRM/Editor/Format/vrmAssetPostprocessor.cs
+++ b/Assets/VRM/Editor/Format/vrmAssetPostprocessor.cs
@@ -25,7 +25,14 @@ namespace VRM
                 var ext = Path.GetExtension(path).ToLower();
                 if (ext == ".vrm")
                 {
-                    ImportVrm(UnityPath.FromUnityPath(path));
+                    try
+                    {
+                        ImportVrm(UnityPath.FromUnityPath(path));
+                    }
+                    catch (VRMImporterContext.NotVrm0Exception)
+                    {
+                        // is not vrm0
+                    }
                 }
             }
         }
diff --git a/Assets/VRM/Runtime/IO/VRMImporterContext.cs b/Assets/VRM/Runtime/IO/VRMImporterContext.cs
index 15af9f0b8..3f6c7d63d 100644
--- a/Assets/VRM/Runtime/IO/VRMImporterContext.cs
+++ b/Assets/VRM/Runtime/IO/VRMImporterContext.cs
@@ -10,6 +10,12 @@ namespace VRM
 {
     public class VRMImporterContext : ImporterContext
     {
+        public class NotVrm0Exception : Exception
+        {
+            public NotVrm0Exception()
+            { }
+        }
+
         public VRM.glTF_VRM_extensions VRM { get; private set; }
 
         public VRMImporterContext(GltfParser parser,
@@ -25,7 +31,7 @@ namespace VRM
             }
             else
             {
-                throw new KeyNotFoundException("not vrm0");
+                throw new NotVrm0Exception();
             }
         }