diff --git a/src/khoj/processor/conversation/openai/utils.py b/src/khoj/processor/conversation/openai/utils.py
index 7d21662f..444b6541 100644
--- a/src/khoj/processor/conversation/openai/utils.py
+++ b/src/khoj/processor/conversation/openai/utils.py
@@ -185,6 +185,17 @@ def llm_thread(
             model_kwargs.pop("response_format", None)
         elif model_name.startswith("o3-"):
             temperature = 1
+            # Get the first system message and add the string `Formatting re-enabled` to it. See https://platform.openai.com/docs/guides/reasoning-best-practices
+            if len(formatted_messages) > 0:
+                system_messages = [
+                    (i, message) for i, message in enumerate(formatted_messages) if message["role"] == "system"
+                ]
+                if len(system_messages) > 0:
+                    first_system_message_index, first_system_message = system_messages[0]
+                    formatted_messages[first_system_message_index][
+                        "content"
+                    ] = f"{first_system_message} Formatting re-enabled"
+
         elif model_name.startswith("deepseek-reasoner"):
             # Two successive messages cannot be from the same role. Should merge any back-to-back messages from the same role.
             # The first message should always be a user message (except system message).