1 files changed, 1 insertions, 0 deletions
diff --git a/ev.h b/ev.h
index 739402e..d8fc17a 100644
--- a/ev.h
+++ b/ev.h
@@ -329,6 +329,7 @@ unsigned int ev_backend (EV_P);
 
 #define EVLOOP_NONBLOCK	1 /* do not block/wait */
 #define EVLOOP_ONESHOT	2 /* block *once* only */
+#define EVUNLOOP_CANCEL 0 /* undo unloop */
 #define EVUNLOOP_ONE    1 /* unloop once */
 #define EVUNLOOP_ALL    2 /* unloop all loops */