diff --git a/problem_definition.pddl b/problem_definition.pddl
index ec79873d5d61fc0c27365fe5677ae3caa375b62d..9a990e63d8cbe0c8bc1fe27f93f3dec48b03fb95 100644
--- a/problem_definition.pddl
+++ b/problem_definition.pddl
@@ -39,7 +39,6 @@
           (suggestAnswer)
           (encourageUser)
           (suggestSubset)
-          (sendTricks)
           (performDemonstration)
           (ALLOWEDMOVE P1 L1)
           (ALLOWEDMOVE P2 L2)