diff --git a/tests/interactive/test-cogl-tex-tile.c b/tests/interactive/test-cogl-tex-tile.c
index 5063dff..177d60e 100644
--- a/tests/interactive/test-cogl-tex-tile.c
+++ b/tests/interactive/test-cogl-tex-tile.c
@@ -90,14 +90,14 @@ test_coglbox_paint(ClutterActor *self)
   ClutterFixed sin_frame, cos_frame;
   ClutterFixed frac_frame;
   gint t;
-  sin_frame = clutter_sini (CLUTTER_ANGLE_FROM_DEG (priv->frame));
-  cos_frame = clutter_cosi (CLUTTER_ANGLE_FROM_DEG (priv->frame));
+  sin_frame = clutter_sinx (priv->frame);
+  cos_frame = clutter_cosx (priv->frame);
   
   pingpong_frame = (priv->frame <= 180 ? priv->frame : 360 - priv->frame);
   frac_frame = (CLUTTER_INT_TO_FIXED (pingpong_frame) /
-                               CLUTTER_INT_TO_FIXED (180));
-  frac_frame += (1.0 >> 1);
-  frac_frame <<= 1;
+                CLUTTER_INT_TO_FIXED (180));
+  frac_frame += 0.5;
+  frac_frame *= 2;
   
   for (t=0; t<4; t+=2)
     {