diff --git a/langchain/prompts/chat.py b/langchain/prompts/chat.py
index bc814158c3..7be1390b35 100644
--- a/langchain/prompts/chat.py
+++ b/langchain/prompts/chat.py
@@ -168,6 +168,8 @@ class ChatPromptTemplate(BaseChatPromptTemplate, ABC):
         for message in messages:
             if isinstance(message, BaseMessagePromptTemplate):
                 input_vars.update(message.input_variables)
+        if "partial_variables" in values:
+            input_vars = input_vars - set(values["partial_variables"])
         if "input_variables" in values:
             if input_vars != set(values["input_variables"]):
                 raise ValueError(
diff --git a/tests/unit_tests/prompts/test_chat.py b/tests/unit_tests/prompts/test_chat.py
index d1faac582a..17c114e640 100644
--- a/tests/unit_tests/prompts/test_chat.py
+++ b/tests/unit_tests/prompts/test_chat.py
@@ -162,3 +162,31 @@ def test_infer_variables() -> None:
     messages = [HumanMessagePromptTemplate.from_template("{foo}")]
     prompt = ChatPromptTemplate(messages=messages)
     assert prompt.input_variables == ["foo"]
+
+
+def test_chat_valid_with_partial_variables() -> None:
+    messages = [
+        HumanMessagePromptTemplate.from_template(
+            "Do something with {question} using {context} giving it like {formatins}"
+        )
+    ]
+    prompt = ChatPromptTemplate(
+        messages=messages,
+        input_variables=["question", "context"],
+        partial_variables={"formatins": "some structure"},
+    )
+    assert set(prompt.input_variables) == set(["question", "context"])
+    assert prompt.partial_variables == {"formatins": "some structure"}
+
+
+def test_chat_valid_infer_variables() -> None:
+    messages = [
+        HumanMessagePromptTemplate.from_template(
+            "Do something with {question} using {context} giving it like {formatins}"
+        )
+    ]
+    prompt = ChatPromptTemplate(
+        messages=messages, partial_variables={"formatins": "some structure"}
+    )
+    assert set(prompt.input_variables) == set(["question", "context"])
+    assert prompt.partial_variables == {"formatins": "some structure"}