diff --git a/www/api/module.html b/www/api/module.html
index 6d72349..5d2f4c3 100644
--- a/www/api/module.html
+++ b/www/api/module.html
@@ -243,8 +243,8 @@
<p>The format of the GetModuleList function is:</p>
<pre class="text">
- char **GetModuleList(const char *pattern,size_t *number_modules,
- ExceptionInfo *exception)
+ char **GetModuleList(const char *pattern,const MagickModuleType type,
+ size_t *number_modules,ExceptionInfo *exception)
</pre>
<p>A description of each parameter follows:</p></ol>
@@ -252,6 +252,9 @@
<h5>pattern</h5>
<ol><p>Specifies a pointer to a text string containing a pattern.</p></ol>
+<h5>type</h5>
+<ol><p>choose from MagickImageCoderModule or MagickImageFilterModule.</p></ol>
+
<h5>number_modules</h5>
<ol><p>This integer returns the number of modules in the list.</p></ol>