diff --git a/doc/html/boost_regex/syntax/basic_extended.html b/doc/html/boost_regex/syntax/basic_extended.html
index 9582a3e3..e05ccf7e 100644
--- a/doc/html/boost_regex/syntax/basic_extended.html
+++ b/doc/html/boost_regex/syntax/basic_extended.html
@@ -191,7 +191,7 @@ cab
         is in the range 1-9, matches the same string that was matched by sub-expression
         <span class="emphasis"><em>n</em></span>. For example the expression:
       </p>
-<pre class="programlisting">^(a*).*\1$</pre>
+<pre class="programlisting">^(a*)[^a]*\1$</pre>
 <p>
         Will match the string:
       </p>
diff --git a/doc/html/boost_regex/syntax/basic_syntax.html b/doc/html/boost_regex/syntax/basic_syntax.html
index 4e720112..208fb9d0 100644
--- a/doc/html/boost_regex/syntax/basic_syntax.html
+++ b/doc/html/boost_regex/syntax/basic_syntax.html
@@ -161,7 +161,7 @@ aaaa
         is in the range 1-9, matches the same string that was matched by sub-expression
         <span class="emphasis"><em>n</em></span>. For example the expression:
       </p>
-<pre class="programlisting">^\(a*\).*\1$</pre>
+<pre class="programlisting">^\(a*\)[^a]*\1$</pre>
 <p>
         Will match the string:
       </p>
diff --git a/doc/html/boost_regex/syntax/perl_syntax.html b/doc/html/boost_regex/syntax/perl_syntax.html
index 5426d9f2..fffc1b40 100644
--- a/doc/html/boost_regex/syntax/perl_syntax.html
+++ b/doc/html/boost_regex/syntax/perl_syntax.html
@@ -268,7 +268,7 @@
         is in the range 1-9, matches the same string that was matched by sub-expression
         <span class="emphasis"><em>n</em></span>. For example the expression:
       </p>
-<pre class="programlisting">^(a*).*\1$</pre>
+<pre class="programlisting">^(a*)[^a]*\1$</pre>
 <p>
         Will match the string:
       </p>
diff --git a/doc/html/index.html b/doc/html/index.html
index 50dfde87..2aa1fd55 100644
--- a/doc/html/index.html
+++ b/doc/html/index.html
@@ -221,7 +221,7 @@
   </p>
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
-<td align="left"><p><small>Last revised: February 24, 2017 at 13:14:00 GMT</small></p></td>
+<td align="left"><p><small>Last revised: July 30, 2017 at 17:49:38 GMT</small></p></td>
 <td align="right"><div class="copyright-footer"></div></td>
 </tr></table>
 <hr>
diff --git a/doc/syntax_basic.qbk b/doc/syntax_basic.qbk
index c3741934..865ef995 100644
--- a/doc/syntax_basic.qbk
+++ b/doc/syntax_basic.qbk
@@ -106,7 +106,7 @@ An escape character followed by a digit /n/, where /n/ is in the range 1-9,
 matches the same string that was matched by sub-expression /n/.  For example 
 the expression:
 
-[pre ^\\(a\*\\).\*\\1$]
+[pre ^\\(a\*\\)\[\^a\]\*\\1$]
 
 Will match the string:
 
diff --git a/doc/syntax_extended.qbk b/doc/syntax_extended.qbk
index 2b3ab31a..0146d5be 100644
--- a/doc/syntax_extended.qbk
+++ b/doc/syntax_extended.qbk
@@ -128,7 +128,7 @@ An escape character followed by a digit /n/, where /n/ is in the range 1-9,
 matches the same string that was matched by sub-expression /n/.  For example 
 the expression:
 
-[pre ^(a\*).\*\\1\$]
+[pre ^(a\*)\[\^a\]\*\\1\$]
 
 Will match the string:
 
diff --git a/doc/syntax_perl.qbk b/doc/syntax_perl.qbk
index 0dc63c42..6ee00e4c 100644
--- a/doc/syntax_perl.qbk
+++ b/doc/syntax_perl.qbk
@@ -173,7 +173,7 @@ An escape character followed by a digit /n/, where /n/ is in the range 1-9,
 matches the same string that was matched by sub-expression /n/.  For example 
 the expression:
 
-[pre ^(a\*).\*\\1$]
+[pre ^(a\*)\[\^a\]\*\\1$]
 
 Will match the string: