diff --git a/reference/array/functions/array-intersect-assoc.xml b/reference/array/functions/array-intersect-assoc.xml
index 4e20d54d6b..718f4196e3 100644
--- a/reference/array/functions/array-intersect-assoc.xml
+++ b/reference/array/functions/array-intersect-assoc.xml
@@ -17,7 +17,7 @@
   <simpara>
    <function>array_intersect_assoc</function> returns an array
    containing all the values of <parameter>array1</parameter>
-   that are present in all the arguments. Note that the keys are used in
+   that are present in all the arguments. Note that the keys are also used in
    the comparison unlike in <function>array_intersect</function>.
   </simpara>
  </refsect1>