diff --git a/lib/erlex.ex b/lib/erlex.ex
index 937d4b3..c756cf7 100644
--- a/lib/erlex.ex
+++ b/lib/erlex.ex
@@ -547,7 +547,7 @@ defmodule ErlexVendored do
     end
   end
 
-  defp atomize(<<number>>) when is_number(number) do
+  defp atomize(<<number>>) when is_number(number) and number != 95 do
     to_string(number)
   end
 
diff --git a/test/pretty_print_test.exs b/test/pretty_print_test.exs
index 67b9d2a..c51972d 100644
--- a/test/pretty_print_test.exs
+++ b/test/pretty_print_test.exs
@@ -590,4 +590,11 @@ defmodule ErlexVendored.Test.PretyPrintTest do
 
     assert pretty_printed == "(<<114, 111, 108, 101, 115, 95, 117, 115, 101, 114, 115>>)"
   end
+
+  test "keep underscore in pattern" do
+    input = "{'embed', __@3, __@4}"
+    pretty_printed = ErlexVendored.pretty_print_type(input)
+
+    assert pretty_printed == "{:embed, _, _}"
+  end
 end