diff --git a/reactos/base/system/services/rpcserver.c b/reactos/base/system/services/rpcserver.c
index b0030dcf35b..63d5dca621b 100644
--- a/reactos/base/system/services/rpcserver.c
+++ b/reactos/base/system/services/rpcserver.c
@@ -728,7 +728,7 @@ DWORD RLockServiceDatabase(
 //    return ScmLockDatabase(0, hMgr->0xC, hLock);
 
     /* FIXME: Lock the database */
-    *lpLock = (void *)0x12345678; /* Dummy! */
+    *lpLock = (SC_RPC_LOCK)0x12345678; /* Dummy! */
 
     return ERROR_SUCCESS;
 }
diff --git a/reactos/dll/win32/advapi32/service/scm.c b/reactos/dll/win32/advapi32/service/scm.c
index 111bd0a614b..e5e6dbc9272 100644
--- a/reactos/dll/win32/advapi32/service/scm.c
+++ b/reactos/dll/win32/advapi32/service/scm.c
@@ -2408,7 +2408,7 @@ UnlockServiceDatabase(SC_LOCK ScLock)
     {
         /* Call to services.exe using RPC */
         dwError = RUnlockServiceDatabase(BindingHandle,
-                                         (SC_RPC_LOCK)ScLock);
+                                         (LPSC_RPC_LOCK)&ScLock);
     }
     _SEH_HANDLE
     {