diff --git a/includes/evenement.hpp b/includes/evenement.hpp
index c359c3f..4dce5f7 100644
--- a/includes/evenement.hpp
+++ b/includes/evenement.hpp
@@ -1,6 +1,8 @@
 #ifndef ECOSYSTEME_EVENEMENT_HPP
 #define ECOSYSTEME_EVENEMENT_HPP 1
 
+#include <iostream>
+
 #include "../includes/univers.hpp"
 #include "../includes/mouton.hpp"
 #include "../includes/loup.hpp"
diff --git a/includes/organisme.hpp b/includes/organisme.hpp
index b60dfd4..b9f448c 100644
--- a/includes/organisme.hpp
+++ b/includes/organisme.hpp
@@ -2,6 +2,7 @@
 #define ECOSYSTEME_ORGANISME_HPP 1
 
 #include <map>
+#include <system_error>
 
 class Organisme {
     inline static int m_total_ID; // permet d'incrémenter de 1 l'ID de chaque organisme
diff --git a/includes/univers.hpp b/includes/univers.hpp
index 841a8bb..2cffab0 100644
--- a/includes/univers.hpp
+++ b/includes/univers.hpp
@@ -1,10 +1,7 @@
 #ifndef ECOSYSTEME_UNIVERS_HPP
 #define ECOSYSTEME_UNIVERS_HPP 1
 
-#include <iostream>
-#include <vector>
 #include <algorithm>
-#include <random>
 
 #include "animal.hpp"
 #include "organisme.hpp"