diff --git a/src/black/lines.py b/src/black/lines.py
index f7c8b5fec13..3fc3859e57c 100644
--- a/src/black/lines.py
+++ b/src/black/lines.py
@@ -505,9 +505,9 @@ def maybe_empty_lines(self, current_line: Line) -> LinesBlock:
             mode=self.mode,
             previous_block=self.previous_block,
             is_class=current_line.is_class,
+            before=before,
+            after=after,
         )
-        block.before = before
-        block.after = after
 
         # Maintain the semantic_leading_comment state.
         if current_line.is_comment: