diff --git a/VoldNativeService.h b/VoldNativeService.h
index e98aea8..d9aee57 100644
--- a/VoldNativeService.h
+++ b/VoldNativeService.h
@@ -112,17 +112,17 @@
 
     binder::Status setStorageBindingSeed(const std::vector<uint8_t>& seed);
 
-    binder::Status createUserStorageKeys(int32_t userId, int32_t userSerial, bool ephemeral);
+    binder::Status createUserStorageKeys(int32_t userId, bool ephemeral);
     binder::Status destroyUserStorageKeys(int32_t userId);
 
     binder::Status setCeStorageProtection(int32_t userId, const std::string& secret);
 
     binder::Status getUnlockedUsers(std::vector<int>* _aidl_return);
-    binder::Status unlockCeStorage(int32_t userId, int32_t userSerial, const std::string& secret);
+    binder::Status unlockCeStorage(int32_t userId, const std::string& secret);
     binder::Status lockCeStorage(int32_t userId);
 
     binder::Status prepareUserStorage(const std::optional<std::string>& uuid, int32_t userId,
-                                      int32_t userSerial, int32_t flags);
+                                      int32_t flags);
     binder::Status destroyUserStorage(const std::optional<std::string>& uuid, int32_t userId,
                                       int32_t flags);