diff --git a/doc/src/sgml/ref/reindexdb.sgml b/doc/src/sgml/ref/reindexdb.sgml
index dae5e0393dd..1afe4a3293c 100644
--- a/doc/src/sgml/ref/reindexdb.sgml
+++ b/doc/src/sgml/ref/reindexdb.sgml
@@ -185,7 +185,7 @@ 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 5281e993b43..26f2e5f2377 100644
--- a/src/bin/scripts/reindexdb.c
+++ b/src/bin/scripts/reindexdb.c
@@ -428,7 +428,7 @@ 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"));