diff --git a/doc/src/sgml/ref/reindexdb.sgml b/doc/src/sgml/ref/reindexdb.sgml
index 6275deb0fd..dd1c9e5274 100644
--- a/doc/src/sgml/ref/reindexdb.sgml
+++ b/doc/src/sgml/ref/reindexdb.sgml
@@ -208,7 +208,7 @@ 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 40003380ae..c543d76b4f 100644
--- a/src/bin/scripts/reindexdb.c
+++ b/src/bin/scripts/reindexdb.c
@@ -757,7 +757,7 @@ help(const char *progname)
 	printf(_("  -i, --index=INDEX         recreate specific index(es) only\n"));
 	printf(_("  -j, --jobs=NUM            use this many concurrent connections to reindex\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"));