diff --git a/OpenTaiko/src/Stages/07.Game/CStage演奏画面共通.cs b/OpenTaiko/src/Stages/07.Game/CStage演奏画面共通.cs
old mode 100644
new mode 100755
index 0c373355..f6e9cd59
--- a/OpenTaiko/src/Stages/07.Game/CStage演奏画面共通.cs
+++ b/OpenTaiko/src/Stages/07.Game/CStage演奏画面共通.cs
@@ -1466,9 +1466,9 @@ internal abstract class CStage演奏画面共通 : CStage {
 
 							if (this.bPAUSE == false && rollSpeed > 0) // && TJAPlayer3.ConfigIni.bAuto先生の連打)
 							{
-								if (((SoundManager.PlayTimer.NowTime * OpenTaiko.ConfigIni.SongPlaybackSpeed)
-									 * OpenTaiko.ConfigIni.SongPlaybackSpeed)
-									> (pChip.n発声時刻ms + (1000.0 / (double)rollSpeed) * pChip.nRollCount)) {
+								double rollSpeedScaled = rollSpeed / OpenTaiko.ConfigIni.SongPlaybackSpeed;
+								if ((SoundManager.PlayTimer.NowTime * OpenTaiko.ConfigIni.SongPlaybackSpeed)
+									> (pChip.n発声時刻ms + (1000.0 / rollSpeedScaled) * pChip.nRollCount)) {
 									EGameType _gt = OpenTaiko.ConfigIni.nGameType[OpenTaiko.GetActualPlayer(nPlayer)];
 									int nLane = 0;