1 diff --git a/ivi-shell/ivi-layout-export.h b/ivi-shell/ivi-layout-export.h
2 index 016d8b5c..02bfb2cb 100644
3 --- a/ivi-shell/ivi-layout-export.h
4 +++ b/ivi-shell/ivi-layout-export.h
5 @@ -56,6 +56,7 @@ extern "C" {
6 #endif /* __cplusplus */
12 #include "compositor.h"
13 @@ -63,6 +64,7 @@ extern "C" {
15 #define IVI_SUCCEEDED (0)
16 #define IVI_FAILED (-1)
17 +#define IVI_INVALID_ID UINT_MAX
19 struct ivi_layout_layer;
20 struct ivi_layout_screen;