diff --git a/Dockerfile b/Dockerfile
index d53886f..6034f49 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -38,7 +38,7 @@ RUN groupadd -g 991 peertube && useradd -u 991 -g 991  --create-home peertube \
 	&& rm -rf /tmp/* /var/lib/apt/lists/* /var/cache/debconf/*-old \
 	&& rm -rf /usr/share/man/?? \
 	&& rm -rf /usr/share/man/??_*  \
-        && mkdir -p /{data,config} \
+        && mkdir {/data,/config} \
 	&& chown -R peertube:peertube /data /config
 
 WORKDIR /app/