diff --git a/contrib/init/systemd/docker.service b/contrib/init/systemd/docker.service
index 83c810d13a..9738ca1ad5 100644
--- a/contrib/init/systemd/docker.service
+++ b/contrib/init/systemd/docker.service
@@ -6,6 +6,7 @@ Requires=docker.socket
 
 [Service]
 ExecStart=/usr/bin/docker -d -H fd://
+MountFlags=slave
 LimitNOFILE=1048576
 LimitNPROC=1048576