diff --git a/salt/common/tools/sbin/so-docker-prune b/salt/common/tools/sbin/so-docker-prune
index 3ec2a31a9..a845c4549 100755
--- a/salt/common/tools/sbin/so-docker-prune
+++ b/salt/common/tools/sbin/so-docker-prune
@@ -49,7 +49,7 @@ def main(quiet):
 
   # Prune old/stopped containers
   if not quiet: print('Pruning old containers')
-  client.container.prune()
+  client.containers.prune()
 
   image_list = client.images.list(filters={ 'dangling': False })