diff --git a/reactos/include/psdk/winuser.h b/reactos/include/psdk/winuser.h
index e23d374fa74..0697c4b1b3f 100644
--- a/reactos/include/psdk/winuser.h
+++ b/reactos/include/psdk/winuser.h
@@ -2825,8 +2825,8 @@ typedef BOOL(CALLBACK *GRAYSTRINGPROC)(HDC,LPARAM,int);
 typedef LRESULT(CALLBACK *HOOKPROC)(int,WPARAM,LPARAM);
 typedef BOOL(CALLBACK *PROPENUMPROCA)(HWND,LPCSTR,HANDLE);
 typedef BOOL(CALLBACK *PROPENUMPROCW)(HWND,LPCWSTR,HANDLE);
-typedef BOOL(CALLBACK *PROPENUMPROCEXA)(HWND,LPSTR,HANDLE,DWORD);
-typedef BOOL(CALLBACK *PROPENUMPROCEXW)(HWND,LPWSTR,HANDLE,DWORD);
+typedef BOOL(CALLBACK *PROPENUMPROCEXA)(HWND,LPSTR,HANDLE,ULONG_PTR);
+typedef BOOL(CALLBACK *PROPENUMPROCEXW)(HWND,LPWSTR,HANDLE,ULONG_PTR);
 typedef int(CALLBACK *EDITWORDBREAKPROCA)(LPSTR,int,int,int);
 typedef int(CALLBACK *EDITWORDBREAKPROCW)(LPWSTR,int,int,int);
 typedef LRESULT(CALLBACK *WNDPROC)(HWND,UINT,WPARAM,LPARAM);
@@ -2839,7 +2839,7 @@ typedef NAMEENUMPROCA DESKTOPENUMPROCA;
 typedef NAMEENUMPROCW DESKTOPENUMPROCW;
 typedef NAMEENUMPROCA WINSTAENUMPROCA;
 typedef NAMEENUMPROCW WINSTAENUMPROCW;
-typedef void(CALLBACK *SENDASYNCPROC)(HWND,UINT,DWORD,LRESULT);
+typedef void(CALLBACK *SENDASYNCPROC)(HWND,UINT,ULONG_PTR,LRESULT);
 DECLARE_HANDLE(HHOOK);
 DECLARE_HANDLE(HDWP);
 DECLARE_HANDLE(HDEVNOTIFY);