diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index d47dd9c..9f23e8c 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -473,7 +473,7 @@ SET ENABLE_SEQSCAN TO OFF;
        <para>
         This parameter is irrelevant on systems, notably Solaris as of Solaris
         10, that ignore socket permissions entirely.  There, one can achieve a
-        similar effect by pointing <varname>unix_socket_directories</> to a
+        similar effect by pointing <varname>unix_socket_directory</> to a
         directory having search permission limited to the desired audience.
         This parameter is also irrelevant on Windows, which does not have
         Unix-domain sockets.