diff --git a/python-packages/smithy-http/smithy_http/aio/restjson.py b/python-packages/smithy-http/smithy_http/aio/restjson.py
index b632c574..f7396c92 100644
--- a/python-packages/smithy-http/smithy_http/aio/restjson.py
+++ b/python-packages/smithy-http/smithy_http/aio/restjson.py
@@ -31,7 +31,13 @@ async def parse_rest_json_error_info(
if check_body:
if body := await http_response.consume_body_async():
- json_body = json.loads(body)
+ try:
+ json_body = json.loads(body)
+ except json.JSONDecodeError:
+ # In some cases the body might end up being HTML depending on the
+ # configuration of the server. In those cases we can simply ignore
+ # the body because we can't find the information we need there.
+ pass
if json_body:
for key, value in json_body.items():
diff --git a/python-packages/smithy-http/tests/unit/aio/test_restjson.py b/python-packages/smithy-http/tests/unit/aio/test_restjson.py
index 3fb3c36a..4f10fa46 100644
--- a/python-packages/smithy-http/tests/unit/aio/test_restjson.py
+++ b/python-packages/smithy-http/tests/unit/aio/test_restjson.py
@@ -118,3 +118,21 @@ async def test_parse_rest_json_error_info_without_body(
)
actual = await parse_rest_json_error_info(response, check_body=False)
assert actual == expected
+
+
+async def test_parse_error_info_non_json_body() -> None:
+ response = HTTPResponse(
+ status=400,
+ fields=tuples_to_fields([]),
+ body=async_list(
+ [
+ (
+ b"\r\n400 Bad Request\r\n"
+ b"\r\n400 Bad Request
\r\n\r\n\r\n"
+ )
+ ]
+ ),
+ )
+ expected = RestJsonErrorInfo("Unknown", "Unknown", None)
+ actual = await parse_rest_json_error_info(response, check_body=True)
+ assert actual == expected