diff --git a/target_s3/formats/format_base.py b/target_s3/formats/format_base.py
index 163fc1c..1188c36 100644
--- a/target_s3/formats/format_base.py
+++ b/target_s3/formats/format_base.py
@@ -112,7 +112,7 @@ def create_key(self) -> str:
             else self.stream_name_path_override
         )
         folder_path = f"{self.bucket}/{self.prefix}/{stream_name}/"
-        file_name = ""
+        file_name = stream_name
         if self.config["append_date_to_prefix"]:
             grain = DATE_GRAIN[self.config["append_date_to_prefix_grain"].lower()]
             partition_name_enabled = False