diff --git a/doc/src/sgml/ref/alter_tablespace.sgml b/doc/src/sgml/ref/alter_tablespace.sgml
index 7c4aabc582..1976b77e1e 100644
--- a/doc/src/sgml/ref/alter_tablespace.sgml
+++ b/doc/src/sgml/ref/alter_tablespace.sgml
@@ -16,7 +16,7 @@ PostgreSQL documentation
 
  <refnamediv>
   <refname>ALTER TABLESPACE</refname>
-  <refpurpose>change the definition of a tablespace or affect objects of a tablespace</refpurpose>
+  <refpurpose>change the definition of a tablespace</refpurpose>
  </refnamediv>
 
  <refsynopsisdiv>