diff --git a/app/user_prompt_support/prompt_response.py b/app/user_prompt_support/prompt_response.py
index b3d4847c..fe6e509d 100644
--- a/app/user_prompt_support/prompt_response.py
+++ b/app/user_prompt_support/prompt_response.py
@@ -35,4 +35,6 @@ def __init__(
         super().__init__(**kwargs)
         # Preserve the original response
         if "response" in kwargs:
-            self.response_str = kwargs["response"]
+            self.response_str = (
+                str(kwargs["response"]) if kwargs["response"] is not None else None
+            )