diff --git a/office/docbook/opensp/pspec.xml b/office/docbook/opensp/pspec.xml
index d894f1c59c..e8709fdb7a 100644
--- a/office/docbook/opensp/pspec.xml
+++ b/office/docbook/opensp/pspec.xml
@@ -50,7 +50,7 @@
     </Package>
 
     <History>
-		<Update release="5">
+	<Update release="5">
             <Date>2020-01-08</Date>
             <Version>1.5.2</Version>
             <Comment>Rebuild</Comment>