diff --git a/include/uapi/media/synx.h b/include/uapi/media/synx.h
index 4ab7b3e0a9a8..ea74d0a00bf7 100644
--- a/include/uapi/media/synx.h
+++ b/include/uapi/media/synx.h
@@ -16,6 +16,7 @@
 #define SYNX_STATE_ACTIVE                    1
 #define SYNX_STATE_SIGNALED_SUCCESS          2
 #define SYNX_STATE_SIGNALED_ERROR            3
+#define SYNX_STATE_SIGNALED_CANCEL           4
 
 #define SYNX_MAX_WAITING_SYNX                16