diff --git a/src/lib.cpp b/src/lib.cpp
index cb9ef08..1cdc3db 100644
--- a/src/lib.cpp
+++ b/src/lib.cpp
@@ -23,9 +23,9 @@ void run() {
     const Action vote = Action("vote", true);
     Role role1({vote, kill, heal});
     Role role2({heal});
-    Event event1 = Event("Event 1", 1710087355, 1, true, {vote}, {}, {});
-    Event event2 = Event("Event 2", 1710087363, 1, true, {}, {kill}, {});
-    Event event3 = Event("Event 3", 1710087369, 1, true, {}, {}, {kill});
+    Event event1 = Event("Event 1", 1710087355, 1, true, {}, {});
+    Event event2 = Event("Event 2", 1710087363, 1, true, {kill}, {});
+    Event event3 = Event("Event 3", 1710087369, 1, true, {}, {kill});
     std::vector<Event> relatedEvents({event2, event3});
     Player player1 = Player("player1", role1, PlayerStatus::ALIVE);
     Player player2 = Player("player2", role1, PlayerStatus::ALIVE);
diff --git a/src/prep/prep.cpp b/src/prep/prep.cpp
index f64a478..93580fe 100644
--- a/src/prep/prep.cpp
+++ b/src/prep/prep.cpp
@@ -46,7 +46,6 @@ Event::Event(std::string title,
              uint32_t utcTimestampCreatedAt,
              uint32_t numberNight,
              bool isVisible,
-             std::vector<Action> causedBy,
              std::vector<Action> prohibits,
              std::vector<Action> allows):
     title(title),
@@ -54,9 +53,6 @@ Event::Event(std::string title,
     numberNight(numberNight),
     isVisible(isVisible) {
     this->utcTimestampCreatedAt = createUTCTimestamp(utcTimestampCreatedAt);
-    for (auto &a : causedBy) {
-        this->causedBy.push_back(a);
-    }
     for (auto &a : prohibits) {
         this->prohibits.push_back(a);
     }
@@ -69,14 +65,12 @@ Event::Event(std::string title,
              uint32_t utcTimestampCreatedAt,
              uint32_t numberNight,
              bool isVisible,
-             std::initializer_list<Action> causedBy,
              std::initializer_list<Action> prohibits,
              std::initializer_list<Action> allows):
     Event(title,
           utcTimestampCreatedAt,
           numberNight,
           isVisible,
-          std::vector<Action>(causedBy),
           std::vector<Action>(prohibits),
           std::vector<Action>(allows)) {
     this->utcTimestampCreatedAt = createUTCTimestamp(utcTimestampCreatedAt);
diff --git a/src/prep/prep.hh b/src/prep/prep.hh
index d4153a9..093aa79 100644
--- a/src/prep/prep.hh
+++ b/src/prep/prep.hh
@@ -74,7 +74,6 @@ struct Event {
     std::tm *utcTimestampCreatedAt;
     uint32_t numberNight;
     bool isVisible;
-    std::vector<Action> causedBy;
     std::vector<Action> prohibits;
     std::vector<Action> allows;
 
@@ -86,14 +85,12 @@ struct Event {
           uint32_t utcTimestampCreatedAt,
           uint32_t numberNight,
           bool isVisible,
-          std::vector<Action> causedBy,
           std::vector<Action> prohibits,
           std::vector<Action> allows);
     Event(std::string title,
           uint32_t utcTimestampCreatedAt,
           uint32_t numberNight,
           bool isVisible,
-          std::initializer_list<Action> causedBy,
           std::initializer_list<Action> prohibits,
           std::initializer_list<Action> allows);
 };