diff --git a/src/wikiq/__init__.py b/src/wikiq/__init__.py
index 15d7ff7..929b571 100755
--- a/src/wikiq/__init__.py
+++ b/src/wikiq/__init__.py
@@ -1437,7 +1437,7 @@ def main():
                 output = "."
 
             # Detect output format from extension
-            output_jsonl = output.endswith(".jsonl")
+            output_jsonl = output.endswith(".jsonl") or output.endswith(".jsonl.d")
             output_parquet = output.endswith(".parquet")
             partition_namespaces = args.partition_namespaces and output_parquet