diff --git a/src/scripting/thingdef_data.cpp b/src/scripting/thingdef_data.cpp
index a737ce4143..f68667bbbe 100644
--- a/src/scripting/thingdef_data.cpp
+++ b/src/scripting/thingdef_data.cpp
@@ -917,7 +917,7 @@ void InitThingdef()
 	fieldptr = new PField("gametic", TypeSInt32, VARF_Native | VARF_Static | VARF_ReadOnly, (intptr_t)&gametic);
 	Namespaces.GlobalNamespace->Symbols.AddSymbol(fieldptr);
 
-	fieldptr = new PField("demoplayback", TypeSInt32, VARF_Native | VARF_Static | VARF_ReadOnly, (intptr_t)&demoplayback);
+	fieldptr = new PField("demoplayback", TypeBool, VARF_Native | VARF_Static | VARF_ReadOnly, (intptr_t)&demoplayback);
 	Namespaces.GlobalNamespace->Symbols.AddSymbol(fieldptr);
 
 	fieldptr = new PField("BackbuttonTime", TypeSInt32, VARF_Native | VARF_Static, (intptr_t)&BackbuttonTime);