diff --git a/src/scripting/vmthunks.cpp b/src/scripting/vmthunks.cpp
index ea4d9530b..3a8a9f71b 100644
--- a/src/scripting/vmthunks.cpp
+++ b/src/scripting/vmthunks.cpp
@@ -3188,6 +3188,7 @@ DEFINE_FIELD(FLevelLocals, fogdensity)
 DEFINE_FIELD(FLevelLocals, outsidefogdensity)
 DEFINE_FIELD(FLevelLocals, skyfog)
 DEFINE_FIELD(FLevelLocals, pixelstretch)
+DEFINE_FIELD(FLevelLocals, MusicVolume)
 DEFINE_FIELD(FLevelLocals, deathsequence)
 DEFINE_FIELD_BIT(FLevelLocals, frozenstate, frozen, 1)	// still needed for backwards compatibility.
 DEFINE_FIELD_NAMED(FLevelLocals, i_compatflags, compatflags)
diff --git a/wadsrc/static/zscript/base.zs b/wadsrc/static/zscript/base.zs
index cfe5ad9dd..beb170470 100644
--- a/wadsrc/static/zscript/base.zs
+++ b/wadsrc/static/zscript/base.zs
@@ -725,6 +725,7 @@ struct LevelLocals native
 	native readonly int outsidefogdensity;
 	native readonly int skyfog;
 	native readonly float pixelstretch;
+	native readonly float MusicVolume;
 	native name deathsequence;
 	native readonly int compatflags;
 	native readonly int compatflags2;