diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index a588f847cef..58a4876f332 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -1,5 +1,5 @@
@@ -183,10 +183,7 @@ where action is one of:
DROP CONSTRAINT
- This form drops constraints on a table.
- Currently, constraints on tables are not required to have unique
- names, so there may be more than one constraint matching the specified
- name. All matching constraints will be dropped.
+ This form drops the specified constraint on a table.