diff --git a/docs/operators/tutorial.md b/docs/operators/tutorial.md
index a68b50b..1c50fc8 100644
--- a/docs/operators/tutorial.md
+++ b/docs/operators/tutorial.md
@@ -56,7 +56,7 @@ Abra can't deploy any applications in future steps unless it can run `docker` co
 groups | grep docker
 
 # if the docker group doesn't already exist, add it manually
-groupadd docker
+sudo groupadd docker
 
 # add user to docker group
 sudo usermod -aG docker $USER