diff --git a/reference/pgsql/functions/pg-set-client-encoding.xml b/reference/pgsql/functions/pg-set-client-encoding.xml
index 8d9b42b808..eec43e3723 100644
--- a/reference/pgsql/functions/pg-set-client-encoding.xml
+++ b/reference/pgsql/functions/pg-set-client-encoding.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.11 $ -->
+<!-- $Revision: 1.12 $ -->
 <!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.16 -->
 <refentry xml:id="function.pg-set-client-encoding" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
@@ -95,7 +95,7 @@ if (!$conn) {
 
 // Set the client encoding to UNICODE.  Data will be automatically
 // converted from the backend encoding to the frontend.
-pg_set_client_encoding($conn, UNICODE);
+pg_set_client_encoding($conn, "UNICODE");
 
 $result = pg_query($conn, "SELECT author, email FROM authors");
 if (!$result) {