diff --git a/doc/Attic/regex_replace.html b/doc/Attic/regex_replace.html
index 8ae8bb01..fd0392eb 100644
--- a/doc/Attic/regex_replace.html
+++ b/doc/Attic/regex_replace.html
@@ -203,8 +203,8 @@ boost::regex e1, e2;
    <B>return</B> <FONT color=#000080>0</FONT>;
 }
 
-<B>extern</B> <B>const</B> <B>char</B>* pre_expression = <FONT color=#0000ff>"(&lt;)|(&gt;)|\\r"</FONT>;
-<B>extern</B> <B>const</B> <B>char</B>* pre_format = <FONT color=#0000ff>"(?1&lt;)(?2&gt;)"</FONT>;
+<B>extern</B> <B>const</B> <B>char</B>* pre_expression = <FONT color=#0000ff>"(&lt;)|(&gt;)|(&amp;)|\\r"</FONT>;
+<B>extern</B> <B>const</B> <B>char</B>* pre_format = <FONT color=#0000ff>"(?1&lt;)(?2&gt;)(?3&amp;amp;)"</FONT>;
 
 
 <B>const</B> <B>char</B>* expression_text = <FONT color=#000080><I>// preprocessor directives: index 1
diff --git a/doc/regex_replace.html b/doc/regex_replace.html
index 8ae8bb01..fd0392eb 100644
--- a/doc/regex_replace.html
+++ b/doc/regex_replace.html
@@ -203,8 +203,8 @@ boost::regex e1, e2;
    <B>return</B> <FONT color=#000080>0</FONT>;
 }
 
-<B>extern</B> <B>const</B> <B>char</B>* pre_expression = <FONT color=#0000ff>"(&lt;)|(&gt;)|\\r"</FONT>;
-<B>extern</B> <B>const</B> <B>char</B>* pre_format = <FONT color=#0000ff>"(?1&lt;)(?2&gt;)"</FONT>;
+<B>extern</B> <B>const</B> <B>char</B>* pre_expression = <FONT color=#0000ff>"(&lt;)|(&gt;)|(&amp;)|\\r"</FONT>;
+<B>extern</B> <B>const</B> <B>char</B>* pre_format = <FONT color=#0000ff>"(?1&lt;)(?2&gt;)(?3&amp;amp;)"</FONT>;
 
 
 <B>const</B> <B>char</B>* expression_text = <FONT color=#000080><I>// preprocessor directives: index 1
diff --git a/example/snippets/regex_replace_example.cpp b/example/snippets/regex_replace_example.cpp
index 75f44eda..69ca40ed 100644
--- a/example/snippets/regex_replace_example.cpp
+++ b/example/snippets/regex_replace_example.cpp
@@ -86,8 +86,8 @@ int main(int argc, const char** argv)
    return 0;
 }
 
-extern const char* pre_expression = "(<)|(>)|\\r";
-extern const char* pre_format = "(?1&lt;)(?2&gt;)";
+extern const char* pre_expression = "(<)|(>)|(&)|\\r";
+extern const char* pre_format = "(?1&lt;)(?2&gt;)(?3&amp;)";
 
 
 const char* expression_text = // preprocessor directives: index 1