diff --git a/aegisub/audio_player_dsound.cpp b/aegisub/audio_player_dsound.cpp
index dc891aa45..5fb09e37f 100644
--- a/aegisub/audio_player_dsound.cpp
+++ b/aegisub/audio_player_dsound.cpp
@@ -338,7 +338,7 @@ void DirectSoundPlayer::Play(int64_t start,int64_t count) {
 	FillBuffer(true);
 
 	DWORD play_flag = 0;
-	if (count > bufSize) {
+	if (count*provider->GetBytesPerSample() > bufSize) {
 		// Start thread
 		thread = new DirectSoundPlayerThread(this);
 		thread->Create();