diff --git a/nixos/doc/manual/configuration/summary.xml b/nixos/doc/manual/configuration/summary.xml
index be1f2263149e..38032c5d9dc3 100644
--- a/nixos/doc/manual/configuration/summary.xml
+++ b/nixos/doc/manual/configuration/summary.xml
@@ -53,7 +53,7 @@ manual</link> for the rest.</para>
       </row>
       <row>
         <entry><literal>{ x = 1; y = 2; }</literal></entry>
-        <entry>An set with attributes names <literal>x</literal> and <literal>y</literal></entry>
+        <entry>A set with attributes named <literal>x</literal> and <literal>y</literal></entry>
       </row>
       <row>
         <entry><literal>{ foo.bar = 1; }</literal></entry>