diff --git a/reference/apcu/functions/apcu-delete.xml b/reference/apcu/functions/apcu-delete.xml
index c34ef5414e..648053a2e2 100644
--- a/reference/apcu/functions/apcu-delete.xml
+++ b/reference/apcu/functions/apcu-delete.xml
@@ -10,7 +10,7 @@
  <refsect1 role="description">
   &reftitle.description;
   <methodsynopsis>
-   <type>bool</type><methodname>apcu_delete</methodname>
+   <type>mixed</type><methodname>apcu_delete</methodname>
    <methodparam><type>mixed</type><parameter>key</parameter></methodparam>
   </methodsynopsis>
   <para>
@@ -38,7 +38,8 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   &return.success;
+   If <parameter>key</parameter> is an &array;, an indexed &array; of the keys is returned.
+   Otherwise &true; is returned on success, or &false; on failure.
   </para>
  </refsect1>