diff --git a/vertexai/_genai/_evals_utils.py b/vertexai/_genai/_evals_utils.py
index fba82280f9..22cc3d6d32 100644
--- a/vertexai/_genai/_evals_utils.py
+++ b/vertexai/_genai/_evals_utils.py
@@ -347,13 +347,7 @@ def _postprocess_user_scenarios_response(
     data_for_df = []
     if hasattr(response, "user_scenarios") and response.user_scenarios:
         for scenario in response.user_scenarios:
-            prompt_content = None
-            if scenario.starting_prompt:
-                prompt_content = genai_types.Content(
-                    parts=[genai_types.Part(text=scenario.starting_prompt)]
-                )
             eval_case = types.EvalCase(
-                prompt=prompt_content,
                 user_scenario=scenario,
             )
             eval_cases.append(eval_case)