diff --git a/lib/doc/UserGuide.lyx b/lib/doc/UserGuide.lyx
index c0830e0a96..6821a06dd4 100644
--- a/lib/doc/UserGuide.lyx
+++ b/lib/doc/UserGuide.lyx
@@ -35971,11 +35971,11 @@ en_US
 \end_layout
 
 \begin_layout Itemize
-th_en_EN_v2.idx
+th_en_US_v2.idx
 \end_layout
 
 \begin_layout Itemize
-th_en_EN_v2.dat
+th_en_US_v2.dat
 \end_layout
 
 \begin_layout Standard