diff --git a/src/sfizz/Synth.cpp b/src/sfizz/Synth.cpp
index d16fc87e..0eb79ae3 100644
--- a/src/sfizz/Synth.cpp
+++ b/src/sfizz/Synth.cpp
@@ -145,6 +145,7 @@ void sfz::Synth::clear()
     resources.midiState.reset();
     ccLabels.clear();
     keyLabels.clear();
+    keyswitchLabels.clear();
     globalOpcodes.clear();
     masterOpcodes.clear();
     groupOpcodes.clear();