diff --git a/2024/day9/main.py b/2024/day9/main.py
index c87b32b..720516e 100644
--- a/2024/day9/main.py
+++ b/2024/day9/main.py
@@ -77,6 +77,7 @@ class DiskMap:
 
             if remaining_free_size != 0:
                 self.blocks[free_index] = FileBlock(free_size - remaining_free_size, file_id)
+                self.blocks.insert(free_index + 1, FreeBlock(remaining_file_size))
                 self.blocks[file_id] = FreeBlock(free_size)
             else:
                 self.blocks[free_index] = FileBlock(free_size, file_id)