diff --git a/src/filter.c b/src/filter.c
index 7c500f8..e8462f1 100644
--- a/src/filter.c
+++ b/src/filter.c
@@ -437,13 +437,31 @@ accelerator_filter_post_normalized(struct motion_filter *filter,
 	struct pointer_accelerator *accel =
 		(struct pointer_accelerator *) filter;
 	struct device_float_coords accelerated;
+	struct normalized_coords coords;
+	static struct device_float_coords ua;
+	static struct device_float_coords aa;
+	static struct normalized_coords c;
 
 	/* Accelerate for device units, normalize afterwards */
 	accelerated = accelerator_filter_generic(filter,
 						 unaccelerated,
 						 data,
 						 time);
-	return normalize_for_dpi(&accelerated, accel->dpi);
+	coords = normalize_for_dpi(&accelerated, accel->dpi);
+
+	ua.x += unaccelerated->x;
+	ua.y += unaccelerated->y;
+	aa.x += accelerated.x;
+	aa.y += accelerated.y;
+	c.x += coords.x;
+	c.y += coords.y;
+
+	printf("devicex %f devicey %f accelx %f accely %f normx %f normy %f\n",
+	       ua.x, ua.y,
+	       aa.x, aa.y,
+	       c.x, c.y);
+
+	return coords;
 }
 
 static struct normalized_coords