diff --git a/rabbit-hutch.yaml b/rabbit-hutch.yaml
index 1944501..74b3931 100644
--- a/rabbit-hutch.yaml
+++ b/rabbit-hutch.yaml
@@ -56,8 +56,7 @@ number:
       then:
         - logger.log: value changed
         - if:
-            condition: !lambda |-
-              return (x > 4.0 || x < 0);
+            condition: lambda 'return (x > 4.0 || x < 0);
             then:
               - state_machine.transition: ERROR