diff --git a/langfuse/api/core/http_client.py b/langfuse/api/core/http_client.py
index 3025a49ba..84588887f 100644
--- a/langfuse/api/core/http_client.py
+++ b/langfuse/api/core/http_client.py
@@ -163,12 +163,12 @@ def maybe_filter_request_body(
     omit: typing.Optional[typing.Any],
 ) -> typing.Optional[typing.Any]:
     if data is None:
-        return (
-            jsonable_encoder(request_options.get("additional_body_parameters", {}))
-            or {}
-            if request_options is not None
-            else None
-        )
+        if request_options is None:
+            return None
+        additional_body_parameters = request_options.get("additional_body_parameters")
+        if not additional_body_parameters:
+            return None
+        return jsonable_encoder(additional_body_parameters)
     elif not isinstance(data, typing.Mapping):
         data_content = jsonable_encoder(data)
     else:
diff --git a/tests/test_http_client.py b/tests/test_http_client.py
new file mode 100644
index 000000000..c2e8e0d01
--- /dev/null
+++ b/tests/test_http_client.py
@@ -0,0 +1,37 @@
+from langfuse.api.core.http_client import get_request_body
+
+
+def test_get_request_body_skips_empty_body_when_no_additional_parameters() -> None:
+    json_body, data_body = get_request_body(
+        json=None,
+        data=None,
+        request_options={"timeout_in_seconds": 30},
+        omit=None,
+    )
+
+    assert json_body is None
+    assert data_body is None
+
+
+def test_get_request_body_includes_additional_body_parameters() -> None:
+    json_body, data_body = get_request_body(
+        json=None,
+        data=None,
+        request_options={"additional_body_parameters": {"foo": "bar"}},
+        omit=None,
+    )
+
+    assert json_body == {"foo": "bar"}
+    assert data_body is None
+
+
+def test_get_request_body_skips_empty_additional_body_parameters() -> None:
+    json_body, data_body = get_request_body(
+        json=None,
+        data=None,
+        request_options={"additional_body_parameters": {}},
+        omit=None,
+    )
+
+    assert json_body is None
+    assert data_body is None