diff --git a/src/test/test_duellist_spielesammlung_projekt.c b/src/test/test_duellist_spielesammlung_projekt.c
index 61991d6..31107bf 100644
--- a/src/test/test_duellist_spielesammlung_projekt.c
+++ b/src/test/test_duellist_spielesammlung_projekt.c
@@ -19,3 +19,15 @@ void test_coinflip_player_x_starts(void) {
     TEST_ASSERT_EQUAL(SUCCESS, result);
     TEST_ASSERT_TRUE(game.currentPlayer == PLAYER_X || game.currentPlayer == PLAYER_O);
 }
+
+void test_coinflip_player_o_starts(void) {
+    // Arrange
+    TicTacToeGame game;
+
+    // Act
+    GameResult result = initializeGame(&game);
+
+    // Assert
+    TEST_ASSERT_EQUAL(SUCCESS, result);
+    TEST_ASSERT_TRUE(game.currentPlayer == PLAYER_X || game.currentPlayer == PLAYER_O);
+}
\ No newline at end of file