diff --git a/init.d/custom.d.examples.linux/50-stun4all b/init.d/custom.d.examples.linux/50-stun4all
index 72f33bc..3b64a3c 100644
--- a/init.d/custom.d.examples.linux/50-stun4all
+++ b/init.d/custom.d.examples.linux/50-stun4all
@@ -18,8 +18,8 @@ zapret_custom_firewall()
 {
         # $1 - 1 - run, 0 - stop
 
-        local f='-p udp -p udp -m length --length 28: -m u32 --u32'
-        fw_nfqws_post $1 "$f 0>>22&0x3C@8&0xC0000003=0 && 0>>22&0x3C@12=0x2112A442" "$f 48&0xC0000003=0 && 52=0x2112A442" $QNUM_STUN4ALL
+        local f='-p udp -m length --length 28: -m u32 --u32'
+        fw_nfqws_post $1 "$f 0>>22&0x3C@8&0xC0000003=0&&0>>22&0x3C@12=0x2112A442" "$f 48&0xC0000003=0 && 52=0x2112A442" $QNUM_STUN4ALL
 }
 zapret_custom_firewall_nft()
 {