diff --git a/update_check_scheduler.cc b/update_check_scheduler.cc
index 1835de9..682bae7 100644
--- a/update_check_scheduler.cc
+++ b/update_check_scheduler.cc
@@ -59,7 +59,7 @@
 }
 
 bool UpdateCheckScheduler::IsBootDeviceRemovable() {
-  return utils::IsRemovableDevice(utils::RootDevice(
+  return utils::IsRemovableDevice(utils::GetDiskName(
       system_state_->hardware()->BootDevice()));
 }