diff --git a/libs/langchain/langchain/chains/conversational_retrieval/base.py b/libs/langchain/langchain/chains/conversational_retrieval/base.py
index ec6c80502e..b35f93167f 100644
--- a/libs/langchain/langchain/chains/conversational_retrieval/base.py
+++ b/libs/langchain/langchain/chains/conversational_retrieval/base.py
@@ -42,8 +42,11 @@ def _get_chat_history(chat_history: List[CHAT_TURN_TYPE]) -> str:
     buffer = ""
     for dialogue_turn in chat_history:
         if isinstance(dialogue_turn, BaseMessage):
-            role_prefix = _ROLE_MAP.get(dialogue_turn.type, f"{dialogue_turn.type}: ")
-            buffer += f"\n{role_prefix}{dialogue_turn.content}"
+            if len(dialogue_turn.content) > 0:
+                role_prefix = _ROLE_MAP.get(
+                    dialogue_turn.type, f"{dialogue_turn.type}: "
+                )
+                buffer += f"\n{role_prefix}{dialogue_turn.content}"
         elif isinstance(dialogue_turn, tuple):
             human = "Human: " + dialogue_turn[0]
             ai = "Assistant: " + dialogue_turn[1]