diff -r ca23936b455b -r 5d201ee4a9c3 src/libraries.h
--- a/src/libraries.h	Mon Jun 06 22:01:22 2022 +0300
+++ b/src/libraries.h	Tue Jun 07 01:37:26 2022 +0300
@@ -78,7 +78,7 @@
 	int rowCount(const QModelIndex&) const override;
 	int columnCount(const QModelIndex&) const override;
 	bool isValidIndex(const int libraryIndex) const;
-	ldraw::ColorTable loadColorTable(QTextStream& errors);
+	ldraw::ColorTable loadColorTable(QTextStream& errors) const;
 private:
 	enum Column
 	{