diff --git a/openhands/agenthub/codeact_agent/function_calling.py b/openhands/agenthub/codeact_agent/function_calling.py
index 88e3eb6643..1799478601 100644
--- a/openhands/agenthub/codeact_agent/function_calling.py
+++ b/openhands/agenthub/codeact_agent/function_calling.py
@@ -29,6 +29,7 @@ SYSTEM_PROMPT = """You are OpenHands agent, a helpful AI assistant that can inte
 <IMPORTANT>
 * If user provides a path, you should NOT assume it's relative to the current working directory. Instead, you should explore the file system to find the file before working on it.
 * When configuring git credentials, use "openhands" as the user.name and "openhands@all-hands.dev" as the user.email by default, unless explicitly instructed otherwise.
+* The assistant MUST NOT include comments in the code unless they are necessary to describe non-obvious behavior.
 </IMPORTANT>
 """
 
diff --git a/openhands/agenthub/codeact_agent/system_prompt.j2 b/openhands/agenthub/codeact_agent/system_prompt.j2
index a1498aacd6..2ee41c8d1f 100644
--- a/openhands/agenthub/codeact_agent/system_prompt.j2
+++ b/openhands/agenthub/codeact_agent/system_prompt.j2
@@ -163,6 +163,9 @@ IMPORTANT: Execute code using <execute_ipython>, <execute_bash>, or <execute_bro
 The assistant should utilize full file paths and the `pwd` command to prevent path-related errors.
 The assistant MUST NOT apologize to the user or thank the user after running commands or editing files. It should only address the user in response to an explicit message from the user, or to ask for more information.
 The assistant MUST NOT push any changes to GitHub unless explicitly requested to do so.
+The assistant MUST NOT include comments in the code unless they are necessary to describe non-obvious behavior, or
+to describe precisely how to apply proposed edits. Comments about applying edits should always have blank lines above
+and below.
 
 {% endset %}
 {# Combine all parts without newlines between them #}