diff --git a/test/fun_with_flags/supervisor_test.exs b/test/fun_with_flags/supervisor_test.exs
index fc75558..4711a3b 100644
--- a/test/fun_with_flags/supervisor_test.exs
+++ b/test/fun_with_flags/supervisor_test.exs
@@ -1,6 +1,5 @@
 defmodule FunWithFlags.SupervisorTest do
   use FunWithFlags.TestCase, async: false
-  import FunWithFlags.TestUtils
 
   alias FunWithFlags.Config
 
@@ -219,10 +218,6 @@ defmodule FunWithFlags.SupervisorTest do
   end
 
   defp expected_supervisor_spec do
-    if on_elixir_15?() do
-      %{intensity: 3, period: 5, strategy: :one_for_one, auto_shutdown: :never}
-    else
-      %{intensity: 3, period: 5, strategy: :one_for_one}
-    end
+    %{intensity: 3, period: 5, strategy: :one_for_one, auto_shutdown: :never}
   end
 end
diff --git a/test/support/test_utils.ex b/test/support/test_utils.ex
index 2f8f6df..c831193 100644
--- a/test/support/test_utils.ex
+++ b/test/support/test_utils.ex
@@ -84,10 +84,6 @@ defmodule FunWithFlags.TestUtils do
     configure_redis_with([database: 5])
   end
 
-  def on_elixir_15? do
-    Version.match?(System.version, ">= 1.15.0")
-  end
-
   def phx_pubsub_ready? do
     try do
       Process.whereis(FunWithFlags.Notifications.PhoenixPubSub) &&