diff --git a/reactos/w32api/include/prsht.h b/reactos/w32api/include/prsht.h
index 299834b68e0..004558980eb 100644
--- a/reactos/w32api/include/prsht.h
+++ b/reactos/w32api/include/prsht.h
@@ -60,6 +60,9 @@ extern "C" {
 #endif
 #define PSCB_INITIALIZED	1
 #define PSCB_PRECREATE	2
+#if (_WIN32_IE >= 0x560)
+#define PSCB_BUTTONPRESSED	3
+#endif /* _WIN32_IE >= 0x560 */
 #define PSM_GETTABCONTROL	1140
 #define PSM_GETCURRENTPAGEHWND	1142
 #define PSM_ISDIALOGMESSAGE	1141
@@ -82,7 +85,7 @@ extern "C" {
 #define PSNRET_INVALID	1
 #define PSNRET_INVALID_NOCHANGEPAGE	2
 #define ID_PSRESTARTWINDOWS	2
-#define ID_PSREBOOTSYSTEM 	3
+#define ID_PSREBOOTSYSTEM	3
 #define WIZ_CXDLG	276
 #define WIZ_CYDLG	140
 #define WIZ_CXBMP	80