diff --git a/reactos/include/psdk/prsht.h b/reactos/include/psdk/prsht.h
index ed7f087e4e1..1a3f4def096 100644
--- a/reactos/include/psdk/prsht.h
+++ b/reactos/include/psdk/prsht.h
@@ -287,8 +287,8 @@ typedef struct _PSHNOTIFY {
 HPROPSHEETPAGE WINAPI CreatePropertySheetPageA(LPCPROPSHEETPAGEA);
 HPROPSHEETPAGE WINAPI CreatePropertySheetPageW(LPCPROPSHEETPAGEW);
 BOOL WINAPI DestroyPropertySheetPage(HPROPSHEETPAGE);
-int WINAPI PropertySheetA(LPCPROPSHEETHEADERA);
-int WINAPI PropertySheetW(LPCPROPSHEETHEADERW);
+INT_PTR WINAPI PropertySheetA(LPCPROPSHEETHEADERA);
+INT_PTR WINAPI PropertySheetW(LPCPROPSHEETHEADERW);
 #define PropSheet_AddPage(d,p) SendMessage(d,PSM_ADDPAGE,0,(LPARAM)p)
 #define PropSheet_Apply(d) SendMessage(d,PSM_APPLY,0,0)
 #define PropSheet_CancelToClose(d) SendMessage(d,PSM_CANCELTOCLOSE,0,0)
diff --git a/reactos/include/psdk/shellapi.h b/reactos/include/psdk/shellapi.h
index 0ec5510a089..8ee54f0df5a 100644
--- a/reactos/include/psdk/shellapi.h
+++ b/reactos/include/psdk/shellapi.h
@@ -334,8 +334,8 @@ BOOL WINAPI ShellExecuteExW(LPSHELLEXECUTEINFOW);
 int WINAPI SHFileOperationA(LPSHFILEOPSTRUCTA);
 int WINAPI SHFileOperationW(LPSHFILEOPSTRUCTW);
 void WINAPI SHFreeNameMappings(HANDLE);
-DWORD WINAPI SHGetFileInfoA(LPCSTR,DWORD,SHFILEINFOA*,UINT,UINT);
-DWORD WINAPI SHGetFileInfoW(LPCWSTR,DWORD,SHFILEINFOW*,UINT,UINT);
+DWORD_PTR WINAPI SHGetFileInfoA(LPCSTR,DWORD,SHFILEINFOA*,UINT,UINT);
+DWORD_PTR WINAPI SHGetFileInfoW(LPCWSTR,DWORD,SHFILEINFOW*,UINT,UINT);
 BOOL WINAPI SHGetNewLinkInfoA(LPCSTR,LPCSTR,LPSTR,BOOL*,UINT);
 BOOL WINAPI SHGetNewLinkInfoW(LPCWSTR,LPCWSTR,LPWSTR,BOOL*,UINT);
 HRESULT WINAPI SHQueryRecycleBinA(LPCSTR, LPSHQUERYRBINFO);