diff --git a/protocol/heartbeat/heartbeat.go b/protocol/heartbeat/heartbeat.go
index cf4c11185..962d6f467 100644
--- a/protocol/heartbeat/heartbeat.go
+++ b/protocol/heartbeat/heartbeat.go
@@ -27,8 +27,8 @@ type Response struct {
 	// type.
 	_ struct{} `kafka:"min=v4,max=v4,tag"`
 
-	ErrorCode      int16 `kafka:"min=v0,max=v4"`
 	ThrottleTimeMs int32 `kafka:"min=v1,max=v4"`
+	ErrorCode      int16 `kafka:"min=v0,max=v4"`
 }
 
 func (r *Response) ApiKey() protocol.ApiKey {