diff --git a/doc/src/sgml/ref/createlang.sgml b/doc/src/sgml/ref/createlang.sgml
index 454fa98044..6d9a7ba9ea 100644
--- a/doc/src/sgml/ref/createlang.sgml
+++ b/doc/src/sgml/ref/createlang.sgml
@@ -1,5 +1,5 @@
@@ -176,7 +176,7 @@ createlang [ connection options ] -
To install pltcl:
-$ createlang pltcl
+$ createlang pltcl dbname