diff --git a/test/doxygen/autodoc.gold b/test/doxygen/autodoc.gold
index 58434b1..9b93c61 100644
--- a/test/doxygen/autodoc.gold
+++ b/test/doxygen/autodoc.gold
@@ -32,7 +32,7 @@
 <method name="const_method" cv="const"><type>void</type></method>
 <method name="volatile_method" cv="volatile"><type>void</type></method>
 <method name="trad_noexcept" cv="noexcept"><type>void</type></method>
-<method name="trad_noexcept_if" cv="noexcept(a==b &amp;&amp;(c||d)))"><type>void</type></method>
+<method name="trad_noexcept_if" cv="noexcept(a==b &amp;&amp;(c||d))"><type>void</type></method>
 <method name="boost_noexcept" cv="noexcept"><type>void</type></method>
 <method name="boost_noexcept_if" cv="noexcept(condition)"><type>void</type></method>
 <method name="trad_constexpr" cv="constexpr"><type>void</type></method>
diff --git a/xsl/doxygen/doxygen2boostbook.xsl b/xsl/doxygen/doxygen2boostbook.xsl
index 5d68930..7e07b0e 100644
--- a/xsl/doxygen/doxygen2boostbook.xsl
+++ b/xsl/doxygen/doxygen2boostbook.xsl
@@ -1156,7 +1156,7 @@
       <xsl:when test="string-length($trailing)">
         <xsl:value-of select="concat(
             'noexcept(',
-            substring($condition, 1, string-length($condition) - string-length($trailing)),
+            substring($condition, 1, string-length($condition) - string-length($trailing) - 1),
             ') ')" />
       </xsl:when>
       <xsl:otherwise>
diff --git a/xsl/sections.xsl b/xsl/sections.xsl
old mode 100755
new mode 100644