diff --git a/docs/users_guide/7.8.1-notes.xml b/docs/users_guide/7.8.1-notes.xml
index ae84575787b05d375f50dfc557f816a5e84c102b..c446b9d5a064ee76ed1e11a76167cb93e6e49e60 100644
--- a/docs/users_guide/7.8.1-notes.xml
+++ b/docs/users_guide/7.8.1-notes.xml
@@ -122,7 +122,7 @@
         <listitem>
             <para>
                 GHC now supports pattern synonyms, enabled by the
-                <literal>-XPatternSynonym</literal> extension,
+                <literal>-XPatternSynonyms</literal> extension,
                 allowing you to name and abstract over patterns more
                 easily.