diff --git a/en/user-guide/docker-tips.md b/en/user-guide/docker-tips.md
index 656c4d2..43cbdb5 100644
--- a/en/user-guide/docker-tips.md
+++ b/en/user-guide/docker-tips.md
@@ -49,7 +49,7 @@ To enable it, edit **/etc/default/docker**, and define DOCKER\_OPTS there.
 
 ```properties
 # Make Docker listen on TCP port 4243 (along with local Unix socket)
-DOCKER_OPTS="-H=tcp://0.0.0.0:4243 -H unix:///var/run/docker.sock"
+DOCKER_OPTS="-H tcp://0.0.0.0:4243 -H unix:///var/run/docker.sock"
 ```
 
 Then, simply restart docker.