1 files changed, 4 insertions, 4 deletions
diff --git a/include/Group.hpp b/include/Group.hpp
index c909728..a8dcf83 100644
--- a/include/Group.hpp
+++ b/include/Group.hpp
@@ -24,12 +24,12 @@ namespace odhtdb
         Group(const std::string &name);
         ~Group();
 
-        void addUser(User *user);
+        void addUser(const User *user);
 
         const std::string& getName() const;
-        const std::vector<User*>& getUsers() const;
+        const std::vector<const User*>& getUsers() const;
     private:
         std::string name;
-        std::vector<User*> users;
+        std::vector<const User*> users;
     };
-}
-\ No newline at end of file
+}