diff --git a/Dockerfile b/Dockerfile
index ea02367..5ce0c3f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -45,7 +45,7 @@ RUN echo "#!/bin/sh\nexit 0" > /usr/sbin/policy-rc.d && \
         ttf-mscorefonts-installer \
         xvfb \
         zlib1g && \
-    if [  $(ls -l /usr/share/fonts/truetype/msttcorefonts | wc -l) -ne 61 ]; \
+    if [ $(ls -l /usr/share/fonts/truetype/msttcorefonts | wc -l) -ne 61 ]; \
         then echo 'msttcorefonts failed to download'; exit 1; fi  && \
     echo "SERVER_ADDITIONAL_ERL_ARGS=\"+S 1:1\"" | tee -a /etc/rabbitmq/rabbitmq-env.conf && \
     sed -i "s/bind .*/bind 127.0.0.1/g" /etc/redis/redis.conf && \