diff --git a/config/qos/makeqosscripts.pl b/config/qos/makeqosscripts.pl
index 5bdd5b811..230dc3265 100644
--- a/config/qos/makeqosscripts.pl
+++ b/config/qos/makeqosscripts.pl
@@ -72,7 +72,6 @@ $qossettings{'DEF_OUT_SPD'} = '';
 $qossettings{'DEF_INC_SPD'} = '';
 $qossettings{'DEFCLASS_INC'} = '';
 $qossettings{'DEFCLASS_OUT'} = '';
-$qossettings{'ACK'} = '';
 $qossettings{'RED_DEV'} = `cat /var/ipfire/red/iface`;
 $qossettings{'IMQ_DEV'} = 'imq0';
 $qossettings{'TOS'} = '';
@@ -80,7 +79,6 @@ $qossettings{'VALID'} = 'yes';
 
 &General::readhash("${General::swroot}/qos/settings", \%qossettings);
 
-my $ACK_MARK = ($qossettings{'ACK'} << $QOS_OUT_SHIFT) . "/$QOS_OUT_MASK";
 my $DEF_OUT_MARK = ($qossettings{'DEFCLASS_OUT'} << $QOS_OUT_SHIFT) . "/$QOS_OUT_MASK";
 my $DEF_INC_MARK = ($qossettings{'DEFCLASS_INC'} << $QOS_INC_SHIFT) . "/$QOS_INC_MASK";
 
@@ -224,31 +222,6 @@ print <<END
 	### Don't change mark on traffic for the ipsec tunnel
 	iptables -t mangle -A QOS-OUT -m mark --mark 50 -j RETURN
 
-	### MARK ACKs
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags SYN,RST SYN -j MARK --set-xmark $ACK_MARK
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags SYN,RST SYN -j RETURN
-
-	iptables -t mangle -A QOS-OUT -p icmp -m length --length 40:100 -j MARK --set-xmark $ACK_MARK
-	iptables -t mangle -A QOS-OUT -p icmp -m length --length 40:100 -j RETURN
-
-	iptables -t mangle -A QOS-OUT -p tcp --syn -m length --length 40:68 -j MARK --set-xmark $ACK_MARK
-	iptables -t mangle -A QOS-OUT -p tcp --syn -m length --length 40:68 -j RETURN
-
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL SYN,ACK -m length --length 40:68 -j MARK --set-xmark $ACK_MARK
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL SYN,ACK -m length --length 40:68 -j RETURN
-
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL ACK -m length --length 40:100 -j MARK --set-xmark $ACK_MARK
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL ACK -m length --length 40:100 -j RETURN
-
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL RST -j MARK --set-xmark $ACK_MARK
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL RST -j RETURN
-
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL ACK,RST -j MARK --set-xmark $ACK_MARK
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL ACK,RST -j RETURN
-
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL ACK,FIN -j MARK --set-xmark $ACK_MARK
-	iptables -t mangle -A QOS-OUT -p tcp --tcp-flags ALL ACK,FIN -j RETURN
-
 	### SET TOS
 END
 ;
diff --git a/html/cgi-bin/qos.cgi b/html/cgi-bin/qos.cgi
index ab427879e..c2ff4a08d 100644
--- a/html/cgi-bin/qos.cgi
+++ b/html/cgi-bin/qos.cgi
@@ -68,7 +68,6 @@ $qossettings{'DEF_OUT_SPD'} = '';
 $qossettings{'DEF_INC_SPD'} = '';
 $qossettings{'DEFCLASS_INC'} = '';
 $qossettings{'DEFCLASS_OUT'} = '';
-$qossettings{'ACK'} = '';
 $qossettings{'RED_DEV'} = 'ppp0';
 $qossettings{'IMQ_DEV'} = 'imq0';
 $qossettings{'VALID'} = 'yes';
@@ -518,7 +517,6 @@ END
 		}
 		$qossettings{'DEFCLASS_INC'} = "210";
 		$qossettings{'DEFCLASS_OUT'} = "110";
-		$qossettings{'ACK'} ="101";
 		$qossettings{'ENABLED'} = 'on';
 		&General::writehash("${General::swroot}/qos/settings", \%qossettings);
 		&General::system("/usr/local/bin/qosctrl", "generate");
@@ -660,7 +658,7 @@ END
 END
 ;
 	}
-	if (($qossettings{'DEFCLASS_OUT'} ne '') && ($qossettings{'DEFCLASS_INC'} ne '')&& ($qossettings{'ACK'} ne '')) {
+	if (($qossettings{'DEFCLASS_OUT'} ne '') && ($qossettings{'DEFCLASS_INC'} ne '')) {
 		print <<END
 		<form method='post' action='$ENV{'SCRIPT_NAME'}'>
 		<table width='66%'>
@@ -668,7 +666,6 @@ END
 		<tr><td width='50%' align='right'>$Lang::tr{'downlink std class'}: 	<td width='30%' align='left'>$qossettings{'DEFCLASS_INC'}
 		    <td width='20%' rowspan='3' align='center' valign='middle'><input type='submit' name='ACTIONDEF' value='$Lang::tr{'modify'}' />
 		<tr><td width='50%' align='right'>$Lang::tr{'uplink std class'}: 	<td width='30%' align='left'>$qossettings{'DEFCLASS_OUT'}
-		<tr><td width='50%' align='right'>ACKs:				<td width='30%' align='left'>$qossettings{'ACK'}
 	 	<tr><td colspan='3' width='100%'><hr />
 		<tr><td colspan='3' width='100%' align='center'>
 		</table>
@@ -692,7 +689,7 @@ if ( ($qossettings{'OUT_SPD'} eq '') || ($qossettings{'INC_SPD'} eq '') ) {
 	exit
 }
 
-if ( ($qossettings{'DEFCLASS_INC'} eq '') || ($qossettings{'DEFCLASS_OUT'} eq '') || ($qossettings{'ACK'} eq '') ) {
+if ( ($qossettings{'DEFCLASS_INC'} eq '') || ($qossettings{'DEFCLASS_OUT'} eq '') ) {
 	&changedefclasses();
 	&Header::closebigbox();
 	&Header::closepage();
@@ -742,21 +739,6 @@ END
 			else { print "<option selected value='$c'>$c</option>\n"; }
 		}
 		print <<END
-		</select><td width='33%' align='center'>&nbsp;
-		</table>
-		<hr />
-		<table width='66%'>
-		<tr><td width='100%' colspan='3'>$Lang::tr{'enter ack class'}
-		<tr><td width='33%' align='right'>ACKs:<td width='33%' align='left'><select name='ACK'>
-END
-;
-		for ( $c = 100 ; $c <= 120 ; $c++ )
-		{
-			if ( $qossettings{'ACK'} ne $c )
-			{ print "<option value='$c'>$c</option>\n"; }
-			else {	print "<option selected value='$c'>$c</option>\n"; }
-		}
-		print <<END
 		</select><td width='33%' align='center'><input type='submit' name='ACTION' value="$Lang::tr{'save'}" />
 		</table>
 		</form>