diff --git a/doc/manual/command-ref/opt-common.xml b/doc/manual/command-ref/opt-common.xml
index 28ec42bbc..6a8107be9 100644
--- a/doc/manual/command-ref/opt-common.xml
+++ b/doc/manual/command-ref/opt-common.xml
@@ -244,7 +244,7 @@
 
   <listitem><para>This option is accepted by
   <command>nix-env</command>, <command>nix-instantiate</command>,
-  <command>nix-shell</command and <command>nix-build</command>.
+  <command>nix-shell</command> and <command>nix-build</command>.
   When evaluating Nix expressions, the expression evaluator will
   automatically try to call functions that
   it encounters.  It can automatically call functions for which every