diff --git a/reactos/dll/directx/ksuser/ksuser.c b/reactos/dll/directx/ksuser/ksuser.c
index 76d79ac2020..8d565231c70 100644
--- a/reactos/dll/directx/ksuser/ksuser.c
+++ b/reactos/dll/directx/ksuser/ksuser.c
@@ -185,7 +185,7 @@ KsCreatePin(HANDLE FilterHandle,
             PHANDLE  ConnectionHandle)
 {
     ULONG BufferSize = sizeof(KSPIN_CONNECT);
-    PKSDATAFORMAT DataFormat = ((PKSDATAFORMAT) ( ((ULONG)Connect) + ((ULONG)sizeof(KSPIN_CONNECT)) ) );
+    PKSDATAFORMAT DataFormat = ((PKSDATAFORMAT) ((ULONG_PTR)Connect + sizeof(KSPIN_CONNECT)));
 
     BufferSize += DataFormat->FormatSize;