diff --git a/doc/src/sgml/ref/alter_materialized_view.sgml b/doc/src/sgml/ref/alter_materialized_view.sgml
index b0759fc5dca..f07b6c15fde 100644
--- a/doc/src/sgml/ref/alter_materialized_view.sgml
+++ b/doc/src/sgml/ref/alter_materialized_view.sgml
@@ -43,7 +43,6 @@ ALTER MATERIALIZED VIEW ALL IN TABLESPACE <replaceable class="parameter">name</r
     SET ( <replaceable class="PARAMETER">storage_parameter</replaceable> = <replaceable class="PARAMETER">value</replaceable> [, ... ] )
     RESET ( <replaceable class="PARAMETER">storage_parameter</replaceable> [, ... ] )
     OWNER TO <replaceable class="PARAMETER">new_owner</replaceable>
-    SET TABLESPACE <replaceable class="PARAMETER">new_tablespace</replaceable>
 </synopsis>
  </refsynopsisdiv>