diff --git a/sdk/storage/azure-storage-blob/azure/storage/blob/_blob_client.py b/sdk/storage/azure-storage-blob/azure/storage/blob/_blob_client.py
index 153b9b0751e7..a642e911f0cf 100644
--- a/sdk/storage/azure-storage-blob/azure/storage/blob/_blob_client.py
+++ b/sdk/storage/azure-storage-blob/azure/storage/blob/_blob_client.py
@@ -985,7 +985,7 @@ def _delete_blob_options(self, delete_snapshots=False, **kwargs):
         return options
 
     @distributed_trace
-    def delete_blob(self, delete_snapshots=False, **kwargs):
+    def delete_blob(self, delete_snapshots=None, **kwargs):
         # type: (str, **Any) -> None
         """Marks the specified blob for deletion.
 
diff --git a/sdk/storage/azure-storage-blob/azure/storage/blob/aio/_blob_client_async.py b/sdk/storage/azure-storage-blob/azure/storage/blob/aio/_blob_client_async.py
index 54a4e488b162..84cd3e3a6c9a 100644
--- a/sdk/storage/azure-storage-blob/azure/storage/blob/aio/_blob_client_async.py
+++ b/sdk/storage/azure-storage-blob/azure/storage/blob/aio/_blob_client_async.py
@@ -463,7 +463,7 @@ async def download_blob(self, offset=None, length=None, **kwargs):
         return downloader
 
     @distributed_trace_async
-    async def delete_blob(self, delete_snapshots=False, **kwargs):
+    async def delete_blob(self, delete_snapshots=None, **kwargs):
         # type: (str, Any) -> None
         """Marks the specified blob for deletion.