diff --git a/.gitignore b/.gitignore
index 36d5f731..78dca3ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,4 @@
 /dist
 *.swp
 /.trash-cache
-admin.config
+kube_config*
diff --git a/README.md b/README.md
index e4a36b97..146348e1 100644
--- a/README.md
+++ b/README.md
@@ -181,7 +181,7 @@ And then run:
 rke up --config cluster.yml
 ```
 
-RKE will first look for the local `.kube_config_cluster.yml` and then tries to upgrade each service to the latest image.
+RKE will first look for the local `kube_config_cluster.yml` and then tries to upgrade each service to the latest image.
 
 > Note that rollback isn't supported in RKE and may lead to unxpected results
 
diff --git a/pki/constants.go b/pki/constants.go
index 6160421c..8d7216e2 100644
--- a/pki/constants.go
+++ b/pki/constants.go
@@ -21,5 +21,5 @@ const (
 
 	KubeAdminCertName         = "kube-admin"
 	KubeAdminOrganizationName = "system:masters"
-	KubeAdminConfigPrefix     = ".kube_config_"
+	KubeAdminConfigPrefix     = "kube_config_"
 )