diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 4d883ec..2456a50 100644
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -1102,7 +1102,7 @@ SELECT '52093.89'::money::numeric::float8;
     of type <type>character</type>.  In collations where whitespace
     is significant, this behavior can produce unexpected results,
     e.g. <command>SELECT 'a '::CHAR(2) collate "C" &lt;
-    'a\n'::CHAR(2)</command> returns true.
+    E'a\n'::CHAR(2)</command> returns true.
     Trailing spaces are removed when converting a <type>character</type> value
     to one of the other string types.  Note that trailing spaces
     <emphasis>are</> semantically significant in