diff --git a/doc/user/preface.xml b/doc/user/preface.xml
index 0ec4ba9dba6cb20fc4a700ffdf0751fbd2aa75ea..bbe0106d350f03c00eee4dc4c777bdb5a1923f40 100644
--- a/doc/user/preface.xml
+++ b/doc/user/preface.xml
@@ -8,7 +8,7 @@
 <section xml:id="preface">
   <title>Tarantool/Box: an overview</title>
   <para>
-    <productname>Tarantool/Box</productname>, or simply
+    <productname>Tarantool/Box</productname>, or simply 
     <productname>Tarantool</productname>,
     is a high performance key/value storage server.  The code is
     available for free under the terms of <citetitle