diff --git a/src/ass_karaoke.cpp b/src/ass_karaoke.cpp
index e89959a79e..e2121fdefb 100644
--- a/src/ass_karaoke.cpp
+++ b/src/ass_karaoke.cpp
@@ -96,6 +96,6 @@ std::vector<KaraokeSyllable> ParseKaraokeSyllables(const AssDialogue *line) {
 }
 
 void SetKaraokeLine(Karaoke& karaoke, const AssDialogue *line, bool auto_split, bool normalize) {
-	karaoke.SetLine(ParseKaraokeSyllables(line), normalize, auto_split);
+	karaoke.SetLine(ParseKaraokeSyllables(line), auto_split, normalize ? line->End : std::optional<int>());
 }