diff --git a/doc/src/sgml/ref/reindexdb.sgml b/doc/src/sgml/ref/reindexdb.sgml
index 23312cedc9..7726323922 100644
--- a/doc/src/sgml/ref/reindexdb.sgml
+++ b/doc/src/sgml/ref/reindexdb.sgml
@@ -174,7 +174,7 @@ PostgreSQL documentation
       <term><option>--system</option></term>
       <listitem>
        <para>
-        Reindex database's system catalogs.
+        Reindex database's system catalogs only.
        </para>
       </listitem>
      </varlistentry>
diff --git a/src/bin/scripts/reindexdb.c b/src/bin/scripts/reindexdb.c
index fd41bd4472..bd5fc8c68b 100644
--- a/src/bin/scripts/reindexdb.c
+++ b/src/bin/scripts/reindexdb.c
@@ -404,7 +404,7 @@ help(const char *progname)
 	printf(_("  -e, --echo                show the commands being sent to the server\n"));
 	printf(_("  -i, --index=INDEX         recreate specific index(es) only\n"));
 	printf(_("  -q, --quiet               don't write any messages\n"));
-	printf(_("  -s, --system              reindex system catalogs\n"));
+	printf(_("  -s, --system              reindex system catalogs only\n"));
 	printf(_("  -S, --schema=SCHEMA       reindex specific schema(s) only\n"));
 	printf(_("  -t, --table=TABLE         reindex specific table(s) only\n"));
 	printf(_("  -v, --verbose             write a lot of output\n"));