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 e52714d721f1..64327c16f86d 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
@@ -832,7 +832,7 @@ def _delete_blob_options(self, delete_snapshots=False, **kwargs):
 
     @distributed_trace
     def delete_blob(self, delete_snapshots=False, **kwargs):
-        # type: (bool, **Any) -> None
+        # type: (str, **Any) -> None
         """Marks the specified blob for deletion.
 
         The blob is later deleted during garbage collection.
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 425a49e4a9b9..74891a987c59 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
@@ -363,7 +363,7 @@ async def download_blob(self, offset=None, length=None, **kwargs):
 
     @distributed_trace_async
     async def delete_blob(self, delete_snapshots=False, **kwargs):
-        # type: (bool, Any) -> None
+        # type: (str, Any) -> None
         """Marks the specified blob for deletion.
 
         The blob is later deleted during garbage collection.