diff --git a/docs/examples/customization/configuration-snippets/README.md b/docs/examples/customization/configuration-snippets/README.md
index 99f1fb151..ef7b38b74 100644
--- a/docs/examples/customization/configuration-snippets/README.md
+++ b/docs/examples/customization/configuration-snippets/README.md
@@ -11,4 +11,4 @@ $ kubectl apply -f ingress.yaml
 ## Test
 
 Check if the contents of the annotation are present in the nginx.conf file using:
-`kubectl exec ingress-nginx-controller-873061567-4n3k2 -n kube-system cat /etc/nginx/nginx.conf`
+`kubectl exec ingress-nginx-controller-873061567-4n3k2 -n kube-system -- cat /etc/nginx/nginx.conf`
diff --git a/docs/examples/customization/custom-headers/README.md b/docs/examples/customization/custom-headers/README.md
index cb7c251e6..99af78408 100644
--- a/docs/examples/customization/custom-headers/README.md
+++ b/docs/examples/customization/custom-headers/README.md
@@ -21,4 +21,4 @@ The nginx ingress controller will read the `ingress-nginx/ingress-nginx-controll
 ## Test
 
 Check the contents of the ConfigMaps are present in the nginx.conf file using:
-`kubectl exec ingress-nginx-controller-873061567-4n3k2 -n ingress-nginx cat /etc/nginx/nginx.conf`
+`kubectl exec ingress-nginx-controller-873061567-4n3k2 -n ingress-nginx -- cat /etc/nginx/nginx.conf`
diff --git a/docs/examples/customization/ssl-dh-param/README.md b/docs/examples/customization/ssl-dh-param/README.md
index e9c936eee..9029b834b 100644
--- a/docs/examples/customization/ssl-dh-param/README.md
+++ b/docs/examples/customization/ssl-dh-param/README.md
@@ -52,4 +52,4 @@ $ kubectl create -f ssl-dh-param.yaml
 ## Test
 
 Check the contents of the configmap is present in the nginx.conf file using:
-`kubectl exec ingress-nginx-controller-873061567-4n3k2 -n kube-system cat /etc/nginx/nginx.conf`
+`kubectl exec ingress-nginx-controller-873061567-4n3k2 -n kube-system -- cat /etc/nginx/nginx.conf`
diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
index 6f9f31dc4..1707aa0e2 100644
--- a/docs/troubleshooting.md
+++ b/docs/troubleshooting.md
@@ -65,7 +65,7 @@ $ kubectl get pods -n <namespace-of-ingress-controller>
 NAME                                        READY     STATUS    RESTARTS   AGE
 nginx-ingress-controller-67956bf89d-fv58j   1/1       Running   0          1m
 
-$ kubectl exec -it -n <namespace-of-ingress-controller> nginx-ingress-controller-67956bf89d-fv58j cat /etc/nginx/nginx.conf
+$ kubectl exec -it -n <namespace-of-ingress-controller> nginx-ingress-controller-67956bf89d-fv58j -- cat /etc/nginx/nginx.conf
 daemon off;
 worker_processes 2;
 pid /run/nginx.pid;
@@ -181,7 +181,7 @@ NAME                   READY     STATUS    RESTARTS   AGE
 test-701078429-s5kca   1/1       Running   0          16s
 
 # check if secret exists
-$ kubectl exec test-701078429-s5kca ls /var/run/secrets/kubernetes.io/serviceaccount/
+$ kubectl exec test-701078429-s5kca -- ls /var/run/secrets/kubernetes.io/serviceaccount/
 ca.crt
 namespace
 token