diff --git a/winsup/w32api/include/winable.h b/winsup/w32api/include/winable.h
index 8f6b7a68e..423ffd46e 100644
--- a/winsup/w32api/include/winable.h
+++ b/winsup/w32api/include/winable.h
@@ -8,6 +8,10 @@
 extern "C" {
 #endif
 
+#define INPUT_MOUSE 0
+#define INPUT_KEYBOARD 1
+#define INPUT_HARDWARE 2
+#define CHILDID_SELF 0
 #define OBJID_WINDOW 0x00000000
 #define OBJID_SYSMENU 0xFFFFFFFF
 #define OBJID_TITLEBAR 0xFFFFFFFE
@@ -39,7 +43,6 @@ typedef struct tagGUITHREADINFO {
 	HWND hwndCaret;
 	RECT rcCaret;
 } GUITHREADINFO,*PGUITHREADINFO;
-BOOL WINAPI BlockInput(BOOL);
 
 #ifdef __cplusplus
 }
diff --git a/winsup/w32api/include/winuser.h b/winsup/w32api/include/winuser.h
index 0018ed45a..01e6ef2d6 100644
--- a/winsup/w32api/include/winuser.h
+++ b/winsup/w32api/include/winuser.h
@@ -2040,6 +2040,7 @@ extern "C" {
 #if(WINVER >= 0x0400)
 #define ENDSESSION_LOGOFF    0x80000000
 #endif /* WINVER >= 0x0400 */
+#define CHILDID_SELF 0
 #define OBJID_WINDOW 0x00000000
 #define OBJID_SYSMENU 0xFFFFFFFF
 #define OBJID_TITLEBAR 0xFFFFFFFE