diff --git a/test/support/messages.ex b/test/support/messages.ex
index 281636e..320766d 100644
--- a/test/support/messages.ex
+++ b/test/support/messages.ex
@@ -1,4 +1,6 @@
 defmodule Protox.Messages do
+  @moduledoc false
+
   use Protox,
     files: [
       "./test/samples/messages.proto"
diff --git a/test/support/random_init.ex b/test/support/random_init.ex
index 30bf98d..68dff20 100644
--- a/test/support/random_init.ex
+++ b/test/support/random_init.ex
@@ -1,6 +1,8 @@
 # credo:disable-for-this-file Credo.Check.Refactor.CyclomaticComplexity
 # credo:disable-for-this-file Credo.Check.Refactor.Nesting
 defmodule Protox.RandomInit do
+  @moduledoc false
+
   use PropCheck
 
   def generate_msg(mod) do