diff --git a/lib/doc/Customization.lyx b/lib/doc/Customization.lyx
index 50e56bd7d3..e255166f1f 100644
--- a/lib/doc/Customization.lyx
+++ b/lib/doc/Customization.lyx
@@ -7191,7 +7191,7 @@ This tag was introduced with LyX 1.4.0.
 status collapsed
 
 \begin_layout Plain Layout
-19
+20
 \end_layout
 
 \end_inset