diff --git a/lib/doc/Customization.lyx b/lib/doc/Customization.lyx
index 7017861463..079b7f74d3 100644
--- a/lib/doc/Customization.lyx
+++ b/lib/doc/Customization.lyx
@@ -31976,9 +31976,7 @@ LyX
 
 \change_inserted 1075283030 1597700112
  document as Bibliography Items, the user deals with formatting 
-\change_inserted 34634807 1620057261
-him
-\change_deleted 34634807 1620057259
+\change_unchanged
 them
 \change_inserted 1075283030 1597700112
 self: there is no attempt of parsing what the user wrote, the string is