diff --git a/actions_user.go b/actions_user.go
index 9d6ae8bafba92af42547c3e014c645abb78ad22f..c5fbc19af67a91b30b7d6fb60de964dff9dd3b55 100644
--- a/actions_user.go
+++ b/actions_user.go
@@ -109,7 +109,7 @@ type AccountRecoveryRequest struct {
 
 // AccountRecoveryResponse is the response type for AccountRecoveryRequest.
 type AccountRecoveryResponse struct {
-	Hint string `json:"hint,optional"`
+	Hint string `json:"hint,omitempty"`
 }
 
 // Sanitize the request.