diff --git a/chat.go b/chat.go
index 9da31a7..811d689 100644
--- a/chat.go
+++ b/chat.go
@@ -9,7 +9,7 @@ import (
 
 // Chat message role defined by the OpenAI API.
 const (
-	ChatMessageRoleSystem    = "system"
+	ChatMessageRoleSystem    = "developer"
 	ChatMessageRoleUser      = "user"
 	ChatMessageRoleAssistant = "assistant"
 	ChatMessageRoleFunction  = "function"