diff --git a/reasoning_gym/utils.py b/reasoning_gym/utils.py
index c7d1b0d8..c59c06ca 100644
--- a/reasoning_gym/utils.py
+++ b/reasoning_gym/utils.py
@@ -8,12 +8,12 @@ SYSTEM_PROMPTS = {
     "DeepSeekZero": """A conversation between User and Assistant. The user asks a question, and the Assistant solves it.
 The assistant first thinks about the reasoning process in the mind and then provides the user with the answer. The reasoning process and answer are enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think>
 <answer>answer here</answer>
-Do not explain your reasoning inside the answer tags, provide only the final answer.
+Do not explain your reasoning inside the answer tags, provide only the final answer. When an example is provided, you should strictly follow the format of the output/answer in that example.
 """,
     "default": """Given a problem, your task is to answer the question by thinking step-by-step in a clear and specific manner.
 Once you have thought about the reasoning process, provide the answer in the following format:
 <answer>answer here</answer>
-Do not explain your reasoning inside the answer tags, provide only the final answer.
+Do not explain your reasoning inside the answer tags, provide only the final answer. When an example is provided, you should strictly follow the format of the output/answer in that example.
 """,
 }