diff --git a/Dockerfile b/Dockerfile
index 9f817bd..01edf36 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,6 @@ RUN echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
     apt-get -y update && \
     apt-get --force-yes -yq install wget apt-transport-https curl && \
     apt-key adv --keyserver keyserver.ubuntu.com --recv-keys D9D0BF019CC8AC0D && \
-    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 1655A0AB68576280 && \
     echo "deb http://archive.ubuntu.com/ubuntu precise main universe multiverse" >> /etc/apt/sources.list && \
     curl -sL https://deb.nodesource.com/setup_6.x | bash - && \
     locale-gen en_US.UTF-8 && \