diff --git a/lib/doc/ja/Additional.lyx b/lib/doc/ja/Additional.lyx
index 4c2b486a05..b59454f700 100644
--- a/lib/doc/ja/Additional.lyx
+++ b/lib/doc/ja/Additional.lyx
@@ -18430,6 +18430,12 @@ Compressed
  for merging two different versions by version control systems.
  Compressed LyX documents are binary files, which cannot be merged by version
  control systems.
+\lang japanese
+
+\begin_inset space \space{}
+\end_inset
+
+
 \end_layout
 
 \begin_layout Subsection