diff --git a/lib/fog/vsphere/requests/compute/vm_take_snapshot.rb b/lib/fog/vsphere/requests/compute/vm_take_snapshot.rb
index fa70f89..1cd14f0 100644
--- a/lib/fog/vsphere/requests/compute/vm_take_snapshot.rb
+++ b/lib/fog/vsphere/requests/compute/vm_take_snapshot.rb
@@ -11,7 +11,7 @@ def vm_take_snapshot(options = {})
             quiesce: false
           }
           vm = get_vm_ref(options['instance_uuid'])
-          task = vm.CreateSnapshot_Task(defaults.merge(options))
+          task = vm.CreateSnapshot_Task(defaults.merge(options.transform_keys(&:to_sym)))
 
           task.wait_for_completion