diff --git a/langchain/chat_models/openai.py b/langchain/chat_models/openai.py
index e09ac9abf72..0a8d7b84fd3 100644
--- a/langchain/chat_models/openai.py
+++ b/langchain/chat_models/openai.py
@@ -100,7 +100,9 @@ def _convert_dict_to_message(_dict: Mapping[str, Any]) -> BaseMessage:
     if role == "user":
         return HumanMessage(content=_dict["content"])
     elif role == "assistant":
-        content = _dict["content"] or ""  # OpenAI returns None for tool invocations
+        # Fix for azure
+        # Also OpenAI returns None for tool invocations
+        content = _dict.get("content", "")
         if _dict.get("function_call"):
             additional_kwargs = {"function_call": dict(_dict["function_call"])}
         else:
diff --git a/langchain/vectorstores/base.py b/langchain/vectorstores/base.py
index a09ee25759c..73b2710228a 100644
--- a/langchain/vectorstores/base.py
+++ b/langchain/vectorstores/base.py
@@ -445,7 +445,7 @@ class VectorStoreRetriever(BaseRetriever):
     search_kwargs: dict = Field(default_factory=dict)
     allowed_search_types: ClassVar[Collection[str]] = (
         "similarity",
-        "similarity_score_threshold",
+        "similarityatscore_threshold",
         "mmr",
     )