diff --git a/lib/galaxy/datatypes/data.py b/lib/galaxy/datatypes/data.py
index 0d83bb2d028..b505a9e7c64 100644
--- a/lib/galaxy/datatypes/data.py
+++ b/lib/galaxy/datatypes/data.py
@@ -369,7 +369,7 @@ class Data(metaclass=DataMeta):
         """
         rel_paths = []
         file_paths = []
-        if dataset.datatype.composite_type or dataset.extension == '.html' or dataset.extension.endswith('.html'):
+        if dataset.datatype.composite_type or dataset.extension.endswith('html'):
             main_file = f"{name}.html"
             rel_paths.append(main_file)
             file_paths.append(dataset.file_name)