diff --git a/src/common/scripting/backend/codegen.cpp b/src/common/scripting/backend/codegen.cpp
index 04fdfe22d..c8136fbac 100644
--- a/src/common/scripting/backend/codegen.cpp
+++ b/src/common/scripting/backend/codegen.cpp
@@ -2686,13 +2686,13 @@ bool FxBinary::Promote(FCompileContext &ctx, bool forceint)
 		ValueType = TypeUInt32;
 	}
 	// If one side is an unsigned 32-bit int and the other side is a signed 32-bit int, the signed side is implicitly converted to unsigned.
-	else if (!ctx.FromDecorate && left->ValueType == TypeUInt32 && right->ValueType == TypeSInt32)
+	else if (!ctx.FromDecorate && left->ValueType == TypeUInt32 && right->ValueType == TypeSInt32 && ctx.Version >= MakeVersion(4, 9, 0))
 	{
 		right = new FxIntCast(right, false, false, true);
 		right = right->Resolve(ctx);
 		ValueType = TypeUInt32;
 	}
-	else if (!ctx.FromDecorate && left->ValueType == TypeSInt32 && right->ValueType == TypeUInt32)
+	else if (!ctx.FromDecorate && left->ValueType == TypeSInt32 && right->ValueType == TypeUInt32 && ctx.Version >= MakeVersion(4, 9, 0))
 	{
 		left = new FxIntCast(left, false, false, true);
 		left = left->Resolve(ctx);