diff --git a/ra_aid/tools/shell.py b/ra_aid/tools/shell.py
index 6bcaa3f..48b6247 100644
--- a/ra_aid/tools/shell.py
+++ b/ra_aid/tools/shell.py
@@ -27,7 +27,7 @@ def run_shell_command(
     """Execute a shell command and return its output.
 
     Args:
-        command: The shell command to execute
+        command: The shell command to execute. Keep it to 300 words or less.
         timeout: Expected runtime in seconds, defaults to 30.
             If process exceeds 2x this value, it will be terminated gracefully.
             If process exceeds 3x this value, it will be killed forcefully.