diff --git a/response.go b/response.go
index e1eb9a5..4599896 100644
--- a/response.go
+++ b/response.go
@@ -2,7 +2,7 @@ package retailcrm
 
 // SuccessfulResponse type.
 type SuccessfulResponse struct {
-	Success bool `json:"success,omitempty"`
+	Success bool `json:"success"`
 }
 
 // CreateResponse type.