diff --git a/test/System/Time.cpp b/test/System/Time.cpp
index b2ef629a..d32f8341 100644
--- a/test/System/Time.cpp
+++ b/test/System/Time.cpp
@@ -1,19 +1,8 @@
 #include <SFML/System/Time.hpp>
-
-#include <ostream>
-#include <doctest.h>
+#include "SystemUtil.hpp"
 
 using doctest::Approx;
 
-namespace sf
-{
-std::ostream& operator <<(std::ostream& os, const sf::Time& time)
-{
-    os << time.asMicroseconds() << "us";
-    return os;
-}
-}
-
 TEST_CASE("sf::Time class - [system]")
 {
     SUBCASE("Construction")
diff --git a/test/Window/VideoMode.cpp b/test/Window/VideoMode.cpp
index 1fc550ad..2f6bab7a 100644
--- a/test/Window/VideoMode.cpp
+++ b/test/Window/VideoMode.cpp
@@ -1,16 +1,5 @@
 #include <SFML/Window/VideoMode.hpp>
-
-#include <doctest.h>
-#include <ostream>
-
-namespace sf
-{
-std::ostream& operator <<(std::ostream& os, const sf::VideoMode& videoMode)
-{
-    os << videoMode.width << " x " << videoMode.height << " x " << videoMode.bitsPerPixel;
-    return os;
-}
-}
+#include "WindowUtil.hpp"
 
 TEST_CASE("sf::VideoMode class - [window]")
 {