diff --git a/ArcFormats/Crowd/AudioEOG.cs b/ArcFormats/Crowd/AudioEOG.cs
index f09fc468..d8dc419c 100644
--- a/ArcFormats/Crowd/AudioEOG.cs
+++ b/ArcFormats/Crowd/AudioEOG.cs
@@ -30,7 +30,7 @@ using System.IO;
 namespace GameRes.Formats.Crowd
 {
     [Export(typeof(AudioFormat))]
-    public class EogAudio : OggAudio
+    public class EogAudio : AudioFormat
     {
         public override string         Tag { get { return "EOG"; } }
         public override string Description { get { return "Crowd engine audio format (Ogg/Vorbis)"; } }
diff --git a/ArcFormats/Ethornell/AudioBGI.cs b/ArcFormats/Ethornell/AudioBGI.cs
index 8e72f6c1..89c43e6c 100644
--- a/ArcFormats/Ethornell/AudioBGI.cs
+++ b/ArcFormats/Ethornell/AudioBGI.cs
@@ -30,7 +30,7 @@ using GameRes.Utility;
 namespace GameRes.Formats.BGI
 {
     [Export(typeof(AudioFormat))]
-    public class BgiAudio : OggAudio
+    public class BgiAudio : AudioFormat
     {
         public override string         Tag { get { return "BW"; } }
         public override string Description { get { return "BGI/Ethornell engine audio (Ogg/Vorbis)"; } }
diff --git a/ArcFormats/ShiinaRio/AudioOGV.cs b/ArcFormats/ShiinaRio/AudioOGV.cs
index 6c95cab2..6052991a 100644
--- a/ArcFormats/ShiinaRio/AudioOGV.cs
+++ b/ArcFormats/ShiinaRio/AudioOGV.cs
@@ -30,7 +30,7 @@ using GameRes.Utility;
 namespace GameRes.Formats.ShiinaRio
 {
     [Export(typeof(AudioFormat))]
-    public class OgvAudio : OggAudio
+    public class OgvAudio : AudioFormat
     {
         public override string         Tag { get { return "OGV"; } }
         public override string Description { get { return "ShiinaRio audio format (Ogg/Vorbis)"; } }