diff --git a/codeinterpreterapi/session.py b/codeinterpreterapi/session.py
index f5f12e7b..bf90eec2 100644
--- a/codeinterpreterapi/session.py
+++ b/codeinterpreterapi/session.py
@@ -108,6 +108,9 @@ def _tools(self, additional_tools: list[BaseTool]) -> list[BaseTool]:
                 description="Input a string of code to a ipython interpreter. "
                 "Write the entire code in a single string. This string can "
                 "be really long, so you can use the `;` character to split lines. "
+                "Start your code on the same line as the opening quote. "
+                "Do not start your code with a line break. "
+                "For example, do 'import numpy', not '\\nimport numpy'."
                 "Variables are preserved between runs. "
                 + (
                     (