diff --git a/installers/charmed_install.sh b/installers/charmed_install.sh
index 975cbbd..2ddc797 100755
--- a/installers/charmed_install.sh
+++ b/installers/charmed_install.sh
@@ -76,6 +76,11 @@
         sudo snap install microk8s --classic --channel=${MICROK8S_VERSION}/stable ||
           FATAL_TRACK k8scluster "snap install microk8s ${MICROK8S_VERSION}/stable failed"
         sudo usermod -a -G microk8s `whoami`
+        # Workaround bug in calico MTU detection
+        if [ ${DEFAULT_IF_MTU} -ne 1500 ] ; then
+            sudo mkdir -p /var/lib/calico
+            sudo ln -sf /var/snap/microk8s/current/var/lib/calico/mtu /var/lib/calico/mtu
+        fi
         sudo cat /var/snap/microk8s/current/args/kube-apiserver | grep advertise-address || (
                 echo "--advertise-address $DEFAULT_IP" | sudo tee -a /var/snap/microk8s/current/args/kube-apiserver
                 sg ${KUBEGRP} -c microk8s.stop
@@ -582,6 +587,7 @@
 
 DEFAULT_IF=`ip route list match 0.0.0.0 | awk '{print $5; exit}'`
 DEFAULT_IP=`ip -o -4 a |grep ${DEFAULT_IF}|awk '{split($4,a,"/"); print a[1]; exit}'`
+DEFAULT_IF_MTU=`ip a show ${DEFAULT_IF} | grep mtu | awk '{print $5}'`
 
 check_arguments $@
 mkdir -p ~/.osm