diff --git a/source/games/duke/src/sounds.cpp b/source/games/duke/src/sounds.cpp
index 6dd4d5eed..2d5c0ccb2 100644
--- a/source/games/duke/src/sounds.cpp
+++ b/source/games/duke/src/sounds.cpp
@@ -771,6 +771,7 @@ void S_WorldTourMappingsForOldSounds()
 			{
 				auto newsfx = soundEngine->AllocateSound();
 				*newsfx = *sfx;
+				newsfx->ResourceId = -1;
 				newsfx->name = fname;
 				newsfx->lumpnum = lump;
 				sfx->UserData[kWorldTourMapping] = soundEngine->GetNumSounds() - 1;