diff --git a/reference/sqlite/functions/sqlite-create-aggregate.xml b/reference/sqlite/functions/sqlite-create-aggregate.xml
index 3345a998c2..905a870ebc 100644
--- a/reference/sqlite/functions/sqlite-create-aggregate.xml
+++ b/reference/sqlite/functions/sqlite-create-aggregate.xml
@@ -75,6 +75,7 @@
      <listitem>
       <para>
        Callback function called for each row of the result set.
+       Function parameters are <literal>&amp;$context, $value, ...</literal>.
       </para>
      </listitem>
     </varlistentry>
@@ -83,6 +84,8 @@
      <listitem>
       <para>
        Callback function to aggregate the "stepped" data from each row.
+       Function parameter is <literal>&amp;$context</literal> and the function
+       should return the final result of aggregation.
       </para>
      </listitem>
     </varlistentry>