diff --git a/src/gui/auxiliary/old_markup.hpp b/src/gui/auxiliary/old_markup.hpp
index 265222b1a58a..b94da88dc4ee 100644
--- a/src/gui/auxiliary/old_markup.hpp
+++ b/src/gui/auxiliary/old_markup.hpp
@@ -73,6 +73,7 @@ class legacy_menu_item
 			label_ = rhs.label_;
 			desc_ = rhs.desc_;
 			default_ = rhs.default_;
+			contained_markup_ = rhs.contained_markup_;
 		}
 		return *this;
 	}