diff --git a/reactos/win32ss/user/ntuser/ntstubs.c b/reactos/win32ss/user/ntuser/ntstubs.c
index 8e8812a51e3..1374a069084 100644
--- a/reactos/win32ss/user/ntuser/ntstubs.c
+++ b/reactos/win32ss/user/ntuser/ntstubs.c
@@ -66,44 +66,6 @@ NtUserBuildHimcList(
     return 0;
 }
 
-BOOL
-APIENTRY
-NtUserDdeGetQualityOfService(
-   IN HWND hwndClient,
-   IN HWND hWndServer,
-   OUT PSECURITY_QUALITY_OF_SERVICE pqosPrev)
-{
-   STUB
-
-   return 0;
-}
-
-DWORD
-APIENTRY
-NtUserDdeInitialize(
-   DWORD Unknown0,
-   DWORD Unknown1,
-   DWORD Unknown2,
-   DWORD Unknown3,
-   DWORD Unknown4)
-{
-   STUB
-
-   return 0;
-}
-
-BOOL
-APIENTRY
-NtUserDdeSetQualityOfService(
-   IN  HWND hwndClient,
-   IN  PSECURITY_QUALITY_OF_SERVICE pqosNew,
-   OUT PSECURITY_QUALITY_OF_SERVICE pqosPrev)
-{
-   STUB
-
-   return 0;
-}
-
 DWORD
 APIENTRY
 NtUserDragObject(
@@ -168,17 +130,6 @@ NtUserGetAltTabInfo(
    return 0;
 }
 
-BOOL
-APIENTRY
-NtUserImpersonateDdeClientWindow(
-   HWND hWndClient,
-   HWND hWndServer)
-{
-   STUB
-
-   return 0;
-}
-
 NTSTATUS
 APIENTRY
 NtUserInitializeClientPfnArrays(