diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml
index 91eb0f2972..b30cc7e83f 100644
--- a/doc/src/sgml/plpgsql.sgml
+++ b/doc/src/sgml/plpgsql.sgml
@@ -1,5 +1,5 @@
 <!--
-$PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.40 2004/07/11 21:48:24 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.41 2004/07/11 23:26:51 momjian Exp $
 -->
 
 <chapter id="plpgsql"> 
@@ -2957,7 +2957,7 @@ END;
 $$ LANGUAGE plpgsql;
 
 
-CREATE FUNCTION instr(varchar, varchar, varchar) RETURNS integer AS $$
+CREATE FUNCTION instr(varchar, varchar, integer) RETURNS integer AS $$
 DECLARE
     string ALIAS FOR $1;
     string_to_search ALIAS FOR $2;