diff --git a/ArcFormats/Ethornell/AudioBGI.cs b/ArcFormats/Ethornell/AudioBGI.cs
index 89c43e6c..a8c02f27 100644
--- a/ArcFormats/Ethornell/AudioBGI.cs
+++ b/ArcFormats/Ethornell/AudioBGI.cs
@@ -38,7 +38,7 @@ namespace GameRes.Formats.BGI
 
         public BgiAudio ()
         {
-            Extensions = new string[] { "" };
+            Extensions = new string[] { "bw", "", "_bw" };
         }
         
         public override SoundInput TryOpen (IBinaryStream file)