diff --git a/setup.pl b/setup.pl
index a3eadb9a4..6cebaa4e8 100755
--- a/setup.pl
+++ b/setup.pl
@@ -420,6 +420,7 @@ else {
 			'listen' => 10000,
 			'denyfile' => "\\.pl\$",
 			'log' => 1,
+			'nolistdir' => 1,
 			'blockhost_failures' => 5,
 			'blockhost_time' => 60,
 			'syslog' => $os_type eq 'windows' ? 0 : 1,
diff --git a/setup.sh b/setup.sh
index 7840d0c4a..2aa919d88 100755
--- a/setup.sh
+++ b/setup.sh
@@ -548,6 +548,7 @@ else
 	fi
 	echo "denyfile=\\.pl\$" >> $cfile
 	echo "log=1" >> $cfile
+	echo "nolistdir=1" >> $cfile
 	echo "blockhost_failures=5" >> $cfile
 	echo "blockhost_time=60" >> $cfile
 	echo "syslog=1" >> $cfile