diff --git a/reference/strings/functions/strpos.xml b/reference/strings/functions/strpos.xml
index d788148cfd9e..5d3d550e7433 100644
--- a/reference/strings/functions/strpos.xml
+++ b/reference/strings/functions/strpos.xml
@@ -35,9 +35,15 @@
     <varlistentry>
      <term><parameter>needle</parameter></term>
      <listitem>
-      <para>
+      <simpara>
        The string to search for.
-      </para>
+      </simpara>
+      <simpara>
+       Passing an empty string as <parameter>needle</parameter> matches at
+       every position. <function>strpos</function> returns
+       <parameter>offset</parameter> when it is specified, or
+       <literal>0</literal> otherwise.
+      </simpara>
       &strings.parameter.needle.non-string;
      </listitem>
     </varlistentry>