diff --git a/aegisub/src/audio_provider_ffmpegsource.cpp b/aegisub/src/audio_provider_ffmpegsource.cpp
index 7d9f86573..f243d1535 100644
--- a/aegisub/src/audio_provider_ffmpegsource.cpp
+++ b/aegisub/src/audio_provider_ffmpegsource.cpp
@@ -52,7 +52,6 @@ FFmpegSourceAudioProvider::FFmpegSourceAudioProvider(Aegisub::String filename) {
 	MsgString = _T("FFmpegSource audio provider: ");
 
 	AudioSource = NULL;
-	Index = NULL;
 
 	try {
 		LoadAudio(filename);
diff --git a/aegisub/src/audio_provider_ffmpegsource.h b/aegisub/src/audio_provider_ffmpegsource.h
index cb849779a..0292c4383 100644
--- a/aegisub/src/audio_provider_ffmpegsource.h
+++ b/aegisub/src/audio_provider_ffmpegsource.h
@@ -46,7 +46,6 @@
 class FFmpegSourceAudioProvider : public AudioProvider, FFmpegSourceProvider {
 private:
 	AudioBase *AudioSource;
-	FrameIndex *Index;
 
 	char FFMSErrMsg[1024];
 	unsigned MsgSize;