diff --git a/aegisub/src/audio_controller.cpp b/aegisub/src/audio_controller.cpp
index 0a9a3b0d0..9d7d55e7c 100644
--- a/aegisub/src/audio_controller.cpp
+++ b/aegisub/src/audio_controller.cpp
@@ -303,7 +303,7 @@ void AudioController::OnTimingControllerUpdatedPrimaryRange()
 {
 	if (playback_mode == PM_PrimaryRange)
 	{
-		player->SetEndPosition(timing_controller->GetPrimaryPlaybackRange().end());
+		player->SetEndPosition(SamplesFromMilliseconds(timing_controller->GetPrimaryPlaybackRange().end()));
 	}
 }