diff --git a/contrib/ansible/roles/etcd/tasks/iptables.yml b/contrib/ansible/roles/etcd/tasks/iptables.yml
index a1035247d94..d8329955342 100644
--- a/contrib/ansible/roles/etcd/tasks/iptables.yml
+++ b/contrib/ansible/roles/etcd/tasks/iptables.yml
@@ -1,6 +1,6 @@
 ---
 - name: Get iptables rules
-  shell: iptables -L
+  command: iptables -L
   register: iptablesrules
   always_run: yes
 
diff --git a/contrib/ansible/roles/master/tasks/iptables.yml b/contrib/ansible/roles/master/tasks/iptables.yml
index a9570f108a9..e0aef1ef4c9 100644
--- a/contrib/ansible/roles/master/tasks/iptables.yml
+++ b/contrib/ansible/roles/master/tasks/iptables.yml
@@ -1,6 +1,6 @@
 ---
 - name: Get iptables rules
-  shell: iptables -L
+  command: iptables -L
   register: iptablesrules
   always_run: yes
 
diff --git a/contrib/ansible/roles/node/tasks/iptables.yml b/contrib/ansible/roles/node/tasks/iptables.yml
index 5d5ae17f733..53fc09c9521 100644
--- a/contrib/ansible/roles/node/tasks/iptables.yml
+++ b/contrib/ansible/roles/node/tasks/iptables.yml
@@ -1,6 +1,6 @@
 ---
 - name: Get iptables rules
-  shell: iptables -L
+  command: iptables -L
   register: iptablesrules
   always_run: yes