diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/errorline.cpp
--- a/src/linetypes/errorline.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/errorline.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -41,3 +41,8 @@
 {
 	return QBrush{Qt::red};
 }
+
+ldraw::Object::Type ldraw::ErrorLine::typeIdentifier() const
+{
+	return Type::ErrorLine;
+}