diff --git a/functions/image.xml b/functions/image.xml
index 6255d248cc..6819044689 100644
--- a/functions/image.xml
+++ b/functions/image.xml
@@ -203,6 +203,39 @@ $black = ImageColorAllocate ($im, 0, 0, 0);
     </para>
    </refsect1>
   </refentry>
+  
+  <refentry id="function.imagecolordeallocate">
+    <refnamediv>
+      <refname>ImageColorDeAllocate</refname>
+      <refpurpose>
+        De-allocate a color for an image
+      </refpurpose>
+    </refnamediv>
+    <refsect1>
+      <title>Description</title>
+      <funcsynopsis>
+        <funcdef>int 
+          <function>imagecolordeallocate</function>
+        </funcdef>
+        <paramdef>int 
+          <parameter>im</parameter>
+        </paramdef>
+        <paramdef>int 
+          <parameter>index</parameter>
+        </paramdef>
+      </funcsynopsis>
+      <para>
+        The <function>ImageColorDeAllocate</function> function de-allocates a color previously
+        allocated with the <function>ImageColorAllocate</function> function.
+        <informalexample>
+          <programlisting role="php">
+$white = ImageColorAllocate($im, 255, 255, 255);
+ImageColorDeAllocate($im, $white);
+          </programlisting>
+        </informalexample>
+      </para>
+    </refsect1>
+  </refentry>
 
   <refentry id="function.imagecolorat">
    <refnamediv>