diff --git a/extensions/openai/completions.py b/extensions/openai/completions.py
index aea07473..810583e1 100644
--- a/extensions/openai/completions.py
+++ b/extensions/openai/completions.py
@@ -153,6 +153,7 @@ def convert_history(history):
     user_input = ""
     system_message = ""
 
+    # Multimodal: convert OpenAI format to multimodal extension format
     if any(isinstance(entry['content'], list) for entry in history):
         new_history = []
         for entry in history: