diff --git a/unitTesting/test_pool.cpp b/unitTesting/test_pool.cpp
index 074cfe2fe0b5bb911b5df839ae0ddcb7f2ed0380..7996cc6c7d6ec52df5f15ee1a6643d4c9a7643f2 100644
--- a/unitTesting/test_pool.cpp
+++ b/unitTesting/test_pool.cpp
@@ -64,7 +64,7 @@ void MyEntity::display(std::ostream& os ) const {
 	os << "Hello! My name is " << getName() << " !" << endl;
 }
 
-main() {
+int main() {
 	MyEntity myEntity("MyEntity");
 
 	cout << "-- Pool.list" << endl;