diff --git a/articles/openai-harmony.md b/articles/openai-harmony.md
index c09a940f7e..fed9b4c6b5 100644
--- a/articles/openai-harmony.md
+++ b/articles/openai-harmony.md
@@ -229,6 +229,18 @@ Current date: 2025-06-28
 
 Reasoning: high
 
+# Valid channels: analysis, commentary, final. Channel must be included for every message.<|end|>
+```
+
+If functions calls are present in the developer message section, use:
+
+```
+<|start|>system<|message|>You are ChatGPT, a large language model trained by OpenAI.
+Knowledge cutoff: 2024-06
+Current date: 2025-06-28
+
+Reasoning: high
+
 # Valid channels: analysis, commentary, final. Channel must be included for every message.
 Calls to these tools must go to the commentary channel: 'functions'.<|end|>
 ```