diff --git a/composer.json b/composer.json
index 5f7377e..91bb978 100644
--- a/composer.json
+++ b/composer.json
@@ -50,7 +50,7 @@
     },
     "autoload-dev": {
         "classmap": [
-            "tests/"
+            "tests/_fixture"
         ]
     },
     "extra": {
diff --git a/tests/ExampleEnum.php b/tests/_fixture/ExampleEnum.php
similarity index 100%
rename from tests/ExampleEnum.php
rename to tests/_fixture/ExampleEnum.php
diff --git a/tests/ExampleIntegerBackedEnum.php b/tests/_fixture/ExampleIntegerBackedEnum.php
similarity index 100%
rename from tests/ExampleIntegerBackedEnum.php
rename to tests/_fixture/ExampleIntegerBackedEnum.php
diff --git a/tests/ExampleStringBackedEnum.php b/tests/_fixture/ExampleStringBackedEnum.php
similarity index 100%
rename from tests/ExampleStringBackedEnum.php
rename to tests/_fixture/ExampleStringBackedEnum.php