diff --git a/src/udev/udevadm-test-builtin.c b/src/udev/udevadm-test-builtin.c
index 322f62793f3..5815f2cc781 100644
--- a/src/udev/udevadm-test-builtin.c
+++ b/src/udev/udevadm-test-builtin.c
@@ -79,6 +79,7 @@ int builtin_main(int argc, char *argv[], void *userdata) {
         UdevBuiltinCommand cmd;
         int r;
 
+        log_set_max_level(LOG_DEBUG);
         log_setup();
 
         r = parse_argv(argc, argv);
diff --git a/src/udev/udevadm-test.c b/src/udev/udevadm-test.c
index ff4625c3be0..748bcaf3648 100644
--- a/src/udev/udevadm-test.c
+++ b/src/udev/udevadm-test.c
@@ -97,6 +97,7 @@ int test_main(int argc, char *argv[], void *userdata) {
         sigset_t mask, sigmask_orig;
         int r;
 
+        log_set_max_level(LOG_DEBUG);
         log_setup();
 
         r = parse_argv(argc, argv);