diff --git a/reference/strings/functions/hex2bin.xml b/reference/strings/functions/hex2bin.xml
index e80f0c7172..4d9285da67 100644
--- a/reference/strings/functions/hex2bin.xml
+++ b/reference/strings/functions/hex2bin.xml
@@ -4,7 +4,7 @@
 <refentry xml:id="function.hex2bin" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>hex2bin</refname>
-  <refpurpose>Convert hex to binary</refpurpose>
+  <refpurpose>Convert the hexadecimal representation of data to binary</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">
@@ -14,7 +14,7 @@
    <methodparam><type>string</type><parameter>data</parameter></methodparam>
   </methodsynopsis>
   <para>
-   Converts the hex representation of data to binary
+   Converts the hex representation of data to binary.
   </para>
  </refsect1>
 
@@ -35,7 +35,15 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   Returns the binary representation of the given data.
+   Returns the binary representation of the given data &return.falseforfailure;.
+  </para>
+ </refsect1>
+
+ <refsect1 role="errors">
+  &reftitle.errors;
+  <para>
+   If the hexadecimal input string is of odd length an <constant>E_WARNING</constant>
+   level error is thrown.
   </para>
  </refsect1>