diff --git a/lib/aryn-sdk/aryn_sdk/partition/partition.py b/lib/aryn-sdk/aryn_sdk/partition/partition.py
index 924bbf35b..f39cc9663 100644
--- a/lib/aryn-sdk/aryn_sdk/partition/partition.py
+++ b/lib/aryn-sdk/aryn_sdk/partition/partition.py
@@ -23,6 +23,7 @@
 
 g_version = "0.1.11"
 
+
 class PartitionError(Exception):
     def __init__(self, message: str, status_code: int) -> None:
         super().__init__(message)
@@ -377,12 +378,12 @@ def partition_file_async_submit(
     if async_submit_url:
         docparse_url = async_submit_url
     elif not aps_url and not docparse_url:
-        docparse_url = _convert_sync_to_async_url(ARYN_DOCPARSE_URL, prefix="/submit", include_rest_of_url=True)
+        docparse_url = _convert_sync_to_async_url(ARYN_DOCPARSE_URL, "/submit", False)
     else:
         if aps_url:
-            aps_url = _convert_sync_to_async_url(aps_url, prefix="/submit", include_rest_of_url=True)
+            aps_url = _convert_sync_to_async_url(aps_url, "/submit", False)
         if docparse_url:
-            docparse_url = _convert_sync_to_async_url(docparse_url, prefix="/submit", include_rest_of_url=True)
+            docparse_url = _convert_sync_to_async_url(docparse_url, "/submit", False)
 
     return _partition_file_inner(
         file=file,
@@ -405,13 +406,16 @@ def partition_file_async_submit(
     )
 
 
-def _convert_sync_to_async_url(url: str, *, prefix: str, include_rest_of_url: bool = False) -> str:
+def _convert_sync_to_async_url(url: str, prefix: str, truncate: bool) -> str:
     parsed_url = urlparse(url)
     assert parsed_url.path.startswith("/v1/")
     if parsed_url.path.startswith("/v1/async/submit"):
         return url
     ary = list(parsed_url)
-    ary[2] = f"/v1/async{prefix}{parsed_url.path[3:] if include_rest_of_url else ''}"  # path
+    if truncate:
+        ary[2] = f"/v1/async{prefix}"  # path
+    else:
+        ary[2] = f"/v1/async{prefix}{parsed_url.path[3:]}"  # path
     return urlunparse(ary)
 
 
@@ -437,7 +441,7 @@ def partition_file_async_result(
         `partition_file` had the partitioning been done synchronously.
     """
     if not async_result_url:
-        async_result_url = _convert_sync_to_async_url(ARYN_DOCPARSE_URL, prefix="/result")
+        async_result_url = _convert_sync_to_async_url(ARYN_DOCPARSE_URL, "/result", True)
 
     aryn_config = _process_config(aryn_api_key, aryn_config)
 
@@ -475,7 +479,7 @@ def partition_file_async_cancel(
         For an example of usage see README.md
     """
     if not async_cancel_url:
-        async_cancel_url = _convert_sync_to_async_url(ARYN_DOCPARSE_URL, prefix="/cancel")
+        async_cancel_url = _convert_sync_to_async_url(ARYN_DOCPARSE_URL, "/cancel", True)
 
     aryn_config = _process_config(aryn_api_key, aryn_config)
 
@@ -518,7 +522,7 @@ def partition_file_async_list(
         }
     """
     if not async_list_url:
-        async_list_url = _convert_sync_to_async_url(ARYN_DOCPARSE_URL, prefix="/list")
+        async_list_url = _convert_sync_to_async_url(ARYN_DOCPARSE_URL, "/list", True)
 
     aryn_config = _process_config(aryn_api_key, aryn_config)