diff --git a/modules/users/user_manager.cpp b/modules/users/user_manager.cpp
index 2c7d7bf..8e00c7e 100644
--- a/modules/users/user_manager.cpp
+++ b/modules/users/user_manager.cpp
@@ -1,5 +1,7 @@
 #include "user_manager.h"
 
+#include "user.h"
+
 void UserManager::add_user(User *user) {
 	if (!user) {
 		printf("UserManager::add_user: ERROR, user is null!\n");
diff --git a/modules/users/user_manager.h b/modules/users/user_manager.h
index 2a36b63..f550d6f 100644
--- a/modules/users/user_manager.h
+++ b/modules/users/user_manager.h
@@ -8,7 +8,7 @@
 #include <vector>
 #include <mutex>
 
-#include "user.h"
+class User;
 
 class UserManager : public Object {
 public: