diff --git a/README.md b/README.md
index 45808a10..ba122c4f 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ username@hostname:~$ sudo mount --types cifs --options gid=${USER},password=nopa
 # Clone the nopaque repository
 username@hostname:~$ git clone https://gitlab.ub.uni-bielefeld.de/sfb1288inf/nopaque.git
 # Create data directories
-username@hostname:~$ mkdir volumes/{db,mq}
+username@hostname:~$ mkdir -p volumes/{db,mq}
 username@hostname:~$ cp db.env.tpl db.env
 username@hostname:~$ cp .env.tpl .env
 # Fill out the variables within these files.