diff --git a/agent/agent.py b/agent/agent.py
index 90e3692..923ebce 100644
--- a/agent/agent.py
+++ b/agent/agent.py
@@ -126,6 +126,10 @@ class PromptAgent(Agent):
         n = 0
         while True:
             response = call_llm(lm_config, prompt)
+            force_prefix = self.prompt_constructor.instruction[
+                "meta_data"
+            ].get("force_prefix", "")
+            response = f"{force_prefix}{response}"
             n += 1
             try:
                 parsed_response = self.prompt_constructor.extract_action(