diff --git a/README.md b/README.md
index 80c2d7a..7e16f94 100644
--- a/README.md
+++ b/README.md
@@ -95,7 +95,7 @@
 Those need to be packaged inside the executed jenkins.war, so use :
 
 ```
-RUM mkdir /tmp/WEB-INF/plugins
+RUN mkdir -p /tmp/WEB-INF/plugins
 RUN curl -L https://updates.jenkins-ci.org/latest/git.hpi -o /tmp/WEB-INF/plugins/git.hpi
 RUN curl -L https://updates.jenkins-ci.org/latest/git-client.hpi -o /tmp/WEB-INF/plugins/git-client.hpi
 RUN cd /tmp; zip --grow /usr/share/jenkins/jenkins.war WEB-INF/*