diff --git a/src/Background.cpp b/src/Background.cpp
index 2f3ec30e76..9311e4a498 100644
--- a/src/Background.cpp
+++ b/src/Background.cpp
@@ -729,7 +729,7 @@ void BackgroundImpl::Layer::UpdateCurBGChange( const Song *pSong, float fLastMus
 	beat_info.elapsed_time= fCurrentTime;
 	pSong->m_SongTiming.GetBeatAndBPSFromElapsedTime(beat_info);
 
-	// Calls to Update() should *not* be scaled by music rate; fCurrentTime is. Undo it.
+	// Calls to Update() should *not* be scaled by music rate unless RateModsAffectFGChanges is enabled; fCurrentTime is. Undo it.
 	const float fRate = PREFSMAN->m_bRateModsAffectTweens ? 1.0f : GAMESTATE->m_SongOptions.GetCurrent().m_fMusicRate;
 
 	// Find the BGSegment we're in
diff --git a/src/Foreground.cpp b/src/Foreground.cpp
index 10f8587dd4..0b8de33db4 100644
--- a/src/Foreground.cpp
+++ b/src/Foreground.cpp
@@ -72,7 +72,7 @@ void Foreground::LoadFromSong( const Song *pSong )
 
 void Foreground::Update( float fDeltaTime )
 {
-	// Calls to Update() should *not* be scaled by music rate. Undo it.
+	// Calls to Update() should *not* be scaled by music rate unless RateModsAffectFGChanges is enabled. Undo it.
 	const float fRate = PREFSMAN->m_bRateModsAffectTweens ? 1.0f : GAMESTATE->m_SongOptions.GetCurrent().m_fMusicRate;
 
 	for( unsigned i=0; i < m_BGAnimations.size(); ++i )