diff --git a/functions/image.xml b/functions/image.xml
index fa66c5eb57..186d155c86 100644
--- a/functions/image.xml
+++ b/functions/image.xml
@@ -2042,7 +2042,8 @@ ImageDestroy ($im);
     <title>Description</title>
     <funcsynopsis>
      <funcprototype>
-      <funcdef>int <function>imagettypes</function></funcdef>
+      <funcdef>int <function>imagetypes</function></funcdef>
+      <void/>
      </funcprototype>
     </funcsynopsis>
     <para>