diff --git a/knots.scm b/knots.scm
index 304931e..ed353f1 100644
--- a/knots.scm
+++ b/knots.scm
@@ -26,6 +26,8 @@
 
             print-backtrace-and-exception/knots
 
+            call-with-temporary-thread
+
             spawn-fiber/knots))
 
 (define (call-with-default-io-waiters thunk)