diff --git a/util/PrismPrinter.h b/util/PrismPrinter.h
index 397cfa9..572cb40 100644
--- a/util/PrismPrinter.h
+++ b/util/PrismPrinter.h
@@ -13,7 +13,7 @@ typedef std::map<AgentNameAndPosition::first_type, AgentNameAndPosition::second_
 typedef std::map<KeyNameAndPosition::first_type, KeyNameAndPosition::second_type> KeyNameAndPositionMap;
 typedef std::pair<cell, std::string> CellAndCondition;
 typedef std::pair<float, std::string> update;
-typedef std::map<update::first_type, update::second_type> updates;
+typedef std::vector<update> updates;
 typedef int8_t ActionId;
 
 std::string capitalize(std::string string);