@@ -203,6 +203,12 @@ func fuzzInternalObject(t *testing.T, forVersion unversioned.GroupVersion, item

 				obj.NodeSelectorLabelBlacklist = []string{"kubernetes.io/hostname"}

 			}

 		},

+		func(obj *configapi.GrantConfig, c fuzz.Continue) {

+			c.FuzzNoCustom(obj)

+			if len(obj.ServiceAccountMethod) == 0 {

+				obj.ServiceAccountMethod = "prompt"

+			}

+		},

 	)

 	f.Fuzz(item)