diff --git a/uloop.c b/uloop.c
index 0c57753..d2f41bb 100644
--- a/uloop.c
+++ b/uloop.c
@@ -548,7 +548,7 @@ int uloop_run_timeout(int timeout)
 		uloop_gettime(&tv);
 
 		next_time = uloop_get_next_timeout(&tv);
-		if (timeout > 0 && timeout < next_time)
+		if (timeout >= 0 && timeout < next_time)
 			next_time = timeout;
 		uloop_run_events(next_time);
 	}