diff --git a/stepmania/src/RageSoundReader_SpeedChange.cpp b/stepmania/src/RageSoundReader_SpeedChange.cpp
index 8fbb39bbc4..9ed1b4a9ce 100644
--- a/stepmania/src/RageSoundReader_SpeedChange.cpp
+++ b/stepmania/src/RageSoundReader_SpeedChange.cpp
@@ -18,7 +18,6 @@ RageSoundReader_SpeedChange::RageSoundReader_SpeedChange( RageSoundReader *pSour
 void RageSoundReader_SpeedChange::SetSpeedRatio( float fRatio )
 {
 	m_fSpeedRatio = fRatio;
-	m_iDeltaFrames = lrintf( GetWindowSizeFrames() * fRatio );
 
 	/* If we havn't read any data yet, put the new delta into effect immediately. */
 	if( m_iDataBufferAvailFrames == 0 )
diff --git a/stepmania/src/RageSoundReader_SpeedChange.h b/stepmania/src/RageSoundReader_SpeedChange.h
index ced21a895f..e5f23d4076 100644
--- a/stepmania/src/RageSoundReader_SpeedChange.h
+++ b/stepmania/src/RageSoundReader_SpeedChange.h
@@ -51,7 +51,6 @@ protected:
 
 	float m_fSpeedRatio;
 	float m_fTrailingSpeedRatio;
-	int m_iDeltaFrames;
 	float m_fErrorFrames;
 };