diff --git a/health/aidl/default/LinkedCallback.h b/health/aidl/default/LinkedCallback.h
index 8c9c997..6b17be0 100644
--- a/health/aidl/default/LinkedCallback.h
+++ b/health/aidl/default/LinkedCallback.h
@@ -36,7 +36,7 @@
     // cookie when it's unlinked.
     static ::android::base::Result<LinkedCallback*> Make(
             std::shared_ptr<Health> service, std::shared_ptr<IHealthInfoCallback> callback);
-    // On callback died, unreigster it from the service.
+    // On callback died, unregister it from the service.
     void OnCallbackDied();
 
   private: