diff --git a/Readme.md b/Readme.md
index 16a526f..dca4eb6 100644
--- a/Readme.md
+++ b/Readme.md
@@ -36,8 +36,8 @@ $ ./bin/kubeconform -h
 Usage of ./bin/kubeconform:
   -ignore-missing-schemas
         skip files with missing schemas instead of failing
-  -k8sversion string
-        version of Kubernetes to test against (default "1.18.0")
+  -kubernetes-sversion string
+        version of Kubernetes to validate against (default "1.18.0")
   -n int
         number of routines to run in parallel (default 4)
   -output string
diff --git a/acceptance.bats b/acceptance.bats
index be4ff61..d8a8b0d 100755
--- a/acceptance.bats
+++ b/acceptance.bats
@@ -71,7 +71,7 @@
 }
 
 @test "Fail when parsing a config with additional properties and strict set" {
-  run bin/kubeconform -strict -k8sversion 1.16.0 fixtures/extra_property.yaml
+  run bin/kubeconform -strict -kubernetes-version 1.16.0 fixtures/extra_property.yaml
   [ "$status" -eq 1 ]
 }
 
diff --git a/cmd/kubeconform/main.go b/cmd/kubeconform/main.go
index bee9647..30650a5 100644
--- a/cmd/kubeconform/main.go
+++ b/cmd/kubeconform/main.go
@@ -223,7 +223,7 @@ func realMain() int {
 	var err error
 	var files []string
 
-	flag.StringVar(&k8sVersion, "k8sversion", "1.18.0", "version of Kubernetes to test against")
+	flag.StringVar(&k8sVersion, "kubernetes-version", "1.18.0", "version of Kubernetes to test against")
 	flag.Var(&schemaLocationsParam, "schema-location", "override schemas location search path (can be specified multiple times)")
 	flag.BoolVar(&ignoreMissingSchemas, "ignore-missing-schemas", false, "skip files with missing schemas instead of failing")
 	flag.BoolVar(&summary, "summary", false, "print a summary at the end")