diff --git a/lib/outlook/internal_tree/tunit_modifications.ex b/lib/outlook/internal_tree/tunit_modifications.ex
index 956aaf6..753f9e2 100644
--- a/lib/outlook/internal_tree/tunit_modifications.ex
+++ b/lib/outlook/internal_tree/tunit_modifications.ex
@@ -52,7 +52,7 @@ defmodule Outlook.InternalTree.TunitModifications do
     end
     [%InternalNode{node| content: content} | apply_modifier(rest, modifier, tu_ids)]
   end
-  def apply_modifier([node, rest], modifier, tu_ids), do: [node | apply_modifier(rest, modifier, tu_ids)]
+  def apply_modifier([node | rest], modifier, tu_ids), do: [node | apply_modifier(rest, modifier, tu_ids)]
   def apply_modifier([],_, _), do: []
 
   def process_tunit_list(tunits, modifier, tu_ids) do