diff --git a/exercises/concept/newsletter/test/newsletter_test.exs b/exercises/concept/newsletter/test/newsletter_test.exs
index 8526ea750a..d97589a093 100644
--- a/exercises/concept/newsletter/test/newsletter_test.exs
+++ b/exercises/concept/newsletter/test/newsletter_test.exs
@@ -86,7 +86,7 @@ defmodule NewsletterTest do
     test "closes the file" do
       file = File.open!(@temp_file_path, [:read])
       assert Newsletter.close_log(file) == :ok
-      assert IO.read(file, :all) == {:error, :terminated}
+      assert IO.read(file, :eof) == {:error, :terminated}
     end
   end