diff --git a/zygiskd/src/main.rs b/zygiskd/src/main.rs
index b1107f7..7692a71 100644
--- a/zygiskd/src/main.rs
+++ b/zygiskd/src/main.rs
@@ -25,10 +25,15 @@ fn start() {
     } else if args.len() == 2 && args[1] == "version" {
         println!("Zygisk Next daemon {}", ZKSU_VERSION);
         return;
+    } else if args.len() == 2 && args[1] == "root" {
+        root_impl::setup();
+        println!("root impl: {:?}", root_impl::get_impl());
+        return;
     }
 
     utils::switch_mount_namespace(1).expect("switch mnt ns");
     root_impl::setup();
+    log::info!("current root impl: {:?}", root_impl::get_impl());
     zygiskd::main().expect("zygiskd main");
 }
 
diff --git a/zygiskd/src/root_impl/mod.rs b/zygiskd/src/root_impl/mod.rs
index 990ad09..4cb3976 100644
--- a/zygiskd/src/root_impl/mod.rs
+++ b/zygiskd/src/root_impl/mod.rs
@@ -45,7 +45,7 @@ pub fn uid_granted_root(uid: i32) -> bool {
     match get_impl() {
         RootImpl::KernelSU => kernelsu::uid_granted_root(uid),
         RootImpl::Magisk => magisk::uid_granted_root(uid),
-        _ => unreachable!(),
+        _ => panic!("uid_granted_root: unknown root impl {:?}", get_impl()),
     }
 }
 
@@ -53,6 +53,6 @@ pub fn uid_should_umount(uid: i32) -> bool {
     match get_impl() {
         RootImpl::KernelSU => kernelsu::uid_should_umount(uid),
         RootImpl::Magisk => magisk::uid_should_umount(uid),
-        _ => unreachable!(),
+        _ => panic!("uid_should_umount: unknown root impl {:?}", get_impl()),
     }
 }