diff --git a/test/fun_core/basic_signup_whitelist_test.exs b/test/fun_core/basic_signup_whitelist_test.exs
index 3370f0b..b63e0f1 100644
--- a/test/fun_core/basic_signup_whitelist_test.exs
+++ b/test/fun_core/basic_signup_whitelist_test.exs
@@ -2,7 +2,7 @@ defmodule FunCore.BasicSignupWhitelistTest do
   use ExUnit.Case
 
   defp normalize(email) do
-    email |> String.trim()
+    email |> String.trim() |> String.downcase()
   end
 
   defp addresses_as_list(addresses_str) do
@@ -15,7 +15,7 @@ defmodule FunCore.BasicSignupWhitelistTest do
     case signups_allowed do
       nil -> false
       "*" -> true
-      list_str -> email_received in addresses_as_list(list_str)
+      list_str -> normalize(email_received) in addresses_as_list(list_str)
     end
   end
 
@@ -31,7 +31,6 @@ defmodule FunCore.BasicSignupWhitelistTest do
     assert "jane@example.com" in lst
   end
 
-  # test for normalize
   describe "Not whitelisted when allowed list is" do
     test "not set" do
       refute(mail_whitelisted_fun(nil, "joe@example.com"))
@@ -50,5 +49,9 @@ defmodule FunCore.BasicSignupWhitelistTest do
     test "Multiple set and one match" do
       assert(mail_whitelisted_fun("joe@example.com, jane@example.com", "jane@example.com"))
     end
+
+    test "Matches with different casings" do
+      assert(mail_whitelisted_fun("joe@Example.com, jane@example.com", "Joe@example.com"))
+    end
   end
 end