diff --git a/xsl/doxygen/doxygen2boostbook.xsl b/xsl/doxygen/doxygen2boostbook.xsl
index 1e9c21f..67d2708 100644
--- a/xsl/doxygen/doxygen2boostbook.xsl
+++ b/xsl/doxygen/doxygen2boostbook.xsl
@@ -1135,10 +1135,14 @@ Cannot handle memberdef element with kind=<xsl:value-of select="@kind"/>
     </programlisting>
   </xsl:template>
 
-  <xsl:template match="highlight|sp" mode="programlisting">
+  <xsl:template match="highlight|codeline" mode="programlisting">
     <xsl:apply-templates mode="programlisting"/>
   </xsl:template>
 
+  <xsl:template match="sp" mode="programlisting">
+    <xsl:text> </xsl:text>
+  </xsl:template>
+
   <xsl:template match="*" mode="programlisting">
     <xsl:apply-templates select="." mode="passthrough"/>
   </xsl:template>