diff --git a/weavedns/README.md b/weavedns/README.md
index 60816353..4ee5b428 100644
--- a/weavedns/README.md
+++ b/weavedns/README.md
@@ -15,8 +15,8 @@ will register it in DNS. For example:
 ```bash
 $ weave launch
 $ weave launch-dns 10.1.0.2/16
-$ weave run 10.1.1.25/24 -ti -h pingme.weave.local ubuntu /bin/bash
-$ shell1=$(weave run 10.1.1.26/24 -ti -h ubuntu.weave.local ubuntu /bin/bash)
+$ weave run 10.1.1.25/24 -ti -h pingme.weave.local ubuntu
+$ shell1=$(weave run 10.1.1.26/24 -ti -h ubuntu.weave.local ubuntu)
 $ docker attach $shell1
 
 # ping pingme.weave.local
@@ -42,7 +42,7 @@ make it use weaveDNS:
 
 ```bash
 $ dns_ip=$(docker inspect --format='{{ .NetworkSettings.IPAddress }}' weavedns)
-$ shell2=$(docker run --dns=$dns_ip -ti ubuntu /bin/bash)
+$ shell2=$(docker run --dns=$dns_ip -ti ubuntu)
 $ weave attach 10.1.1.27/24 $shell2
 ```