diff --git a/Dockerfile b/Dockerfile
index 7b198cb81..cfb4931d9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,19 +1,19 @@
 FROM nasqueron/arcanist
 
 RUN export DEBIAN_FRONTEND=noninteractive \
     && apt-get update \
     && apt-get -y install \
         g++ \
         apache2 \
         mariadb-server \
         sudo \
     && rm -rf /var/lib/apt/lists/*
 
 RUN /etc/init.d/mysql start \
     && mysqladmin -u root password root \
     && /etc/init.d/mysql stop
 
-RUN echo 'ALL            ALL = (ALL) NOPASSWD: ALL' >> /etc/sudoers
+RUN echo 'ALL ALL = (ALL) NOPASSWD: ALL' >> /etc/sudoers
 
 RUN /opt/libphutil/scripts/build_xhpast.php