diff --git a/tests/meson.build b/tests/meson.build
index 4dec4acd..b99bd223 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -325,6 +325,7 @@ endforeach
 # Run udev rule generator with fatal warnings
 envs.set('UDEV_HWDB', udev_hwdb.full_path())
 envs.set('UDEV_HWDB_CHECK_CONTENTS', default_drivers_are_enabled ? '1' : '0')
+envs.set('G_MESSAGES_DEBUG', '')
 test('udev-hwdb',
      find_program('test-generated-hwdb.sh'),
      depends: udev_hwdb,