diff --git a/test/Pong/test_updateBallPosition.c b/test/Pong/test_updateBallPosition.c
index fe5fc3d..a5c98a6 100644
--- a/test/Pong/test_updateBallPosition.c
+++ b/test/Pong/test_updateBallPosition.c
@@ -18,7 +18,11 @@ void tearDown(void){
 
 void test_updateBallPosition(void){
     /* arrange */
-    Ball ball = { 10, 10, 1, 1 };
+    Ball ball;
+    ball.x = 10;
+    ball.y = 10;
+    ball.speedX = 1;
+    ball.speedY = 1;
     int expectedX = ball.x + ball.speedX * 5; // erwartete Endposition nach 5 Schritten
     int expectedY = ball.y + ball.speedY * 5;