diff --git a/lib/doc/Customization.lyx b/lib/doc/Customization.lyx
index c7f09d113d..baecb3b8f8 100644
--- a/lib/doc/Customization.lyx
+++ b/lib/doc/Customization.lyx
@@ -16768,11 +16768,7 @@ src/FontInfo.cpp
 \end_layout
 
 \begin_layout Chapter
-Includin
-\begin_inset Quotes erd
-\end_inset
-
-g External Material
+Including External Material
 \end_layout
 
 \begin_layout Standard