diff --git a/reactos/include/reactos/undocuser.h b/reactos/include/reactos/undocuser.h
index c69afc5e189..1d47195e339 100644
--- a/reactos/include/reactos/undocuser.h
+++ b/reactos/include/reactos/undocuser.h
@@ -107,6 +107,13 @@ extern "C" {
 #define LN_MESSAGE_BEEP       0x9
 #define LN_START_SCREENSAVE   0xA
 
+// From WinCE 6.0 Imm.h SDK
+// Returns for ImmProcessHotKey
+#define IPHK_HOTKEY                     0x0001
+#define IPHK_PROCESSBYIME               0x0002
+#define IPHK_CHECKCTRL                  0x0004
+#define IPHK_SKIPTHISKEY                0x0010
+
 //
 // Undocumented flags for DrawCaptionTemp
 //
@@ -114,6 +121,8 @@ extern "C" {
 
 #define STARTF_SCRNSAVER 0x80000000
 
+#define MOD_WINLOGON_SAS 0x8000
+
 #define CW_USEDEFAULT16 ((short)0x8000)
 
 #define SBRG_SCROLLBAR     0 /* the scrollbar itself */