diff --git a/protocol/credentials.go b/protocol/credentials.go
index 1bf8348..a94d6a6 100644
--- a/protocol/credentials.go
+++ b/protocol/credentials.go
@@ -149,7 +149,7 @@ type CredentialRefreshMessage struct {
 
 // CredentialRefreshMessageBody is msg body for refresh message
 type CredentialRefreshMessageBody struct {
-	Refresh []Refresh `json:"refresh"`
+	Credentials []Refresh `json:"credentials"`
 }
 
 // Refresh is struct the represents refresh request