diff --git a/testing/test_core.py b/testing/test_core.py
index 369d3067e..09497ef7c 100644
--- a/testing/test_core.py
+++ b/testing/test_core.py
@@ -87,7 +87,6 @@ class TestBootstrapping:
         # ok, we did not explode
 
     def test_pluginmanager_ENV_startup(self, testdir, monkeypatch):
-        return
         x500 = testdir.makepyfile(pytest_x500="#")
         p = testdir.makepyfile("""
             import pytest