diff --git a/data/core/init.lua b/data/core/init.lua
index c36704ef..8d83bd59 100644
--- a/data/core/init.lua
+++ b/data/core/init.lua
@@ -1397,7 +1397,7 @@ local run_threads = coroutine.wrap(function()
             core.threads[k] = nil
           end
         else
-          wait = wait or 0
+          wait = wait or (1/30)
           thread.wake = system.get_time() + wait
           minimal_time_to_wake = math.min(minimal_time_to_wake, wait)
         end