Update wording.

diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml
index 94f1fdb5a1bd98497363d608a4af71fa281babf1..53a0a7b12677ee9ca860dd64385ff2a3d6fc3ac0 100644 (file)
--- a/doc/src/sgml/libpq.sgml
+++ b/doc/src/sgml/libpq.sgml
@@ -4352,7 +4352,7 @@ installs too. The file's location can also be specified by the
 </para>
 
 <para>
-To set environment variables on Windows, from <literal>My Computer</>,
+To set an environment variable on Windows, from <literal>My Computer</>,
 choose <literal>View System Information</>, and from the <literal>Advanced</>
 tab, choose <literal>Environment Variables</>, then add a user or system
 variable.