diff --git a/.travis.yml b/.travis.yml
index 73d5efa..2068bba 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ services:
 - docker
 before_install:
 - sudo cat /etc/docker/daemon.json
-- echo '{"mtu": 1460}' | sudo tee /etc/docker/daemon.json
+- "echo '{\"mtu\": 1460}' | sudo tee /etc/docker/daemon.json"
 - sudo systemctl restart docker
 - sudo cat /etc/docker/daemon.json
 - make checks