diff --git a/tests/apple2.dd.c b/tests/apple2.dd.c
index 7a87d94..469bf24 100644
--- a/tests/apple2.dd.c
+++ b/tests/apple2.dd.c
@@ -217,7 +217,7 @@ Test(apple2_dd, phaser)
     cr_assert_eq(drive->track_pos, 1);
 
     // And test that we can go backward
-    drive->phase_state = 0;
+    drive->phase_state = 0x2;
     apple2_dd_phaser(drive);
     cr_assert_eq(drive->track_pos, 0);
 }