diff --git a/nodered/Dockerfile b/nodered/Dockerfile
index adcdbf1..f64c8c7 100644
--- a/nodered/Dockerfile
+++ b/nodered/Dockerfile
@@ -53,7 +53,7 @@ RUN chown -R node-red:node-red /usr/src/node-red && \
     /tmp/install_devtools.sh && \
     rm -r /tmp/*
     
-RUN RUN set -ex \
+RUN set -ex \
 	&& apt-get install -y wget sudo net-tools dhcpdump  bluez arp-scan
 
 RUN addgroup sudo && addgroup node-red sudo