diff --git a/xsl/docbook.xsl b/xsl/docbook.xsl
index a862bb1..3a3ebee 100644
--- a/xsl/docbook.xsl
+++ b/xsl/docbook.xsl
@@ -320,8 +320,8 @@ Error: XSL template 'link-or-anchor' called with invalid link-type '<xsl:value-o
       <refnamediv>
         <refname><xsl:value-of select="$refname"/></refname>
         <refpurpose>
-		  <xsl:apply-templates mode="purpose" select="$purpose"/>
-		</refpurpose>
+          <xsl:apply-templates mode="purpose" select="$purpose"/>
+        </refpurpose>
       </refnamediv>
       <refsynopsisdiv>
         <synopsis>
@@ -535,4 +535,3 @@ Error: XSL template 'link-or-anchor' called with invalid link-type '<xsl:value-o
     </xsl:if>
   </xsl:template>
 </xsl:stylesheet>
-