diff --git a/package/ppp/files/ifup.pppoa b/package/ppp/files/ifup.pppoa
index 449c6d53dc..fc2e82eff5 100644
--- a/package/ppp/files/ifup.pppoa
+++ b/package/ppp/files/ifup.pppoa
@@ -25,7 +25,6 @@ while :; do
   IDLETIME=${IDLETIME:+lcp-echo-failure $IDLETIME}
   MTU=$(nvram get ppp_mtu)
   MTU=${MTU:-1500}
-  MTU=${MTU:+ mtu $MTU mru $MTU}
 
   /usr/sbin/pppd nodetach \
 	plugin pppoatm.so ${VPI:-8}.${VCI:-35} \
@@ -34,7 +33,7 @@ while :; do
   	linkname $type \
   	user "$USERNAME" \
   	password "$PASSWORD" \
-  	$MTU \
+  	mtu $MTU mru $MTU
   	$IDLETIME \
   	$REDIAL
   
diff --git a/package/ppp/files/ifup.pppoe b/package/ppp/files/ifup.pppoe
index 1111131222..a30dd2a9d9 100644
--- a/package/ppp/files/ifup.pppoe
+++ b/package/ppp/files/ifup.pppoe
@@ -24,7 +24,6 @@ while :; do
   IDLETIME=${IDLETIME:+lcp-echo-failure $IDLETIME}
   MTU=$(nvram get ppp_mtu)
   MTU=${MTU:-1492}
-  MTU=${MTU:+ mtu $MTU mru $MTU}
 
   ifconfig $IFNAME up
   /usr/sbin/pppd nodetach \
@@ -35,7 +34,7 @@ while :; do
   	linkname $type \
   	user "$USERNAME" \
   	password "$PASSWORD" \
-  	$MTU \
+  	mtu $MTU mru $MTU
   	$IDLETIME \
   	$REDIAL \
   	nic-$IFNAME