diff --git a/tools/test/bin/onos-push-keys b/tools/test/bin/onos-push-keys
index fd49f86..247d331 100755
--- a/tools/test/bin/onos-push-keys
+++ b/tools/test/bin/onos-push-keys
@@ -9,5 +9,9 @@
 remote=$ONOS_USER@${1:-$OCI}
 
 scp -q ~/.ssh/id_rsa.pub $remote:/tmp
-ssh $remote "cat /tmp/id_rsa.pub >> ~/.ssh/authorized_keys"
+ssh $remote "
+    cat /tmp/id_rsa.pub >> ~/.ssh/authorized_keys
+    sort -u ~/.ssh/authorized_keys > ~/.ssh/authorized_keys.bak
+    mv ~/.ssh/authorized_keys.bak ~/.ssh/authorized_keys
+"
 ssh -n -o PasswordAuthentication=no $remote true