diff --git a/readme.md b/readme.md
index 308a748..f79e4e3 100644
--- a/readme.md
+++ b/readme.md
@@ -158,29 +158,29 @@ func (a *AccountBehavior) InitialState() *samplepb.Account {
 }
 
 // HandleCommand handles every command that is sent to the persistent behavior
-func (a *AccountBehavior) HandleCommand(_ context.Context, command Command, _ *samplepb.Account) (events []Event, err error) {
-  switch cmd := command.(type) {
-  case *samplepb.CreateAccount:
-    // TODO in production grid app validate the command using the prior state
-    return []Event{
-      &samplepb.AccountCreated{
-        AccountId:      cmd.GetAccountId(),
-        AccountBalance: cmd.GetAccountBalance(),
-      },
-    }, nil
-
-  case *samplepb.CreditAccount:
-    // TODO in production grid app validate the command using the prior state
-    return []Event{
-      &samplepb.AccountCredited{
-        AccountId:      cmd.GetAccountId(),
-        AccountBalance: cmd.GetBalance(),
-      },
-    }, nil
-
-  default:
-    return nil, errors.New("unhandled command")
-  }
+func (a *AccountBehavior) HandleCommand(_ context.Context, command ego.Command, _ *samplepb.Account) (events []ego.Event, err error) {
+	switch cmd := command.(type) {
+	case *samplepb.CreateAccount:
+		// TODO in production grid app validate the command using the prior state
+		return []ego.Event{
+			&samplepb.AccountCreated{
+				AccountId:      cmd.GetAccountId(),
+				AccountBalance: cmd.GetAccountBalance(),
+			},
+		}, nil
+
+	case *samplepb.CreditAccount:
+		// TODO in production grid app validate the command using the prior state
+		return []ego.Event{
+			&samplepb.AccountCredited{
+				AccountId:      cmd.GetAccountId(),
+				AccountBalance: cmd.GetBalance(),
+			},
+		}, nil
+
+	default:
+		return nil, errors.New("unhandled command")
+	}
 }
 
 // HandleEvent handles every event emitted