diff --git a/ChangeLog b/ChangeLog
index 25d74457..3254fce7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -22,6 +22,8 @@
 - vipsthumbnail -o allows absolute file names
 - much better exif handling for jpg images (thanks Gary)
 - preserve jpeg app13 (photoshop ipct)
+- nearest neighbour goes back to round down ... round to nearest caused a
+  range of annoying problems, such as strange half-pixels along edges
 
 14/11/12 started 7.30.6
 - capture tiff warnings earlier
diff --git a/TODO b/TODO
index 665ed0c5..3eb9175a 100644
--- a/TODO
+++ b/TODO
@@ -1,3 +1,8 @@
+- now we've removed round-to-nearest from NN, we need something extra in the
+  affine transform to displace the input cods
+
+  dx/dy displace output
+
 - check libtool version number, should be binary-compat with 7.30 
 
 - quadratic doesn't work for order 3
diff --git a/libvips/resample/interpolate.c b/libvips/resample/interpolate.c
index c46f3271..7a1431cd 100644
--- a/libvips/resample/interpolate.c
+++ b/libvips/resample/interpolate.c
@@ -333,10 +333,8 @@ vips_interpolate_nearest_interpolate( VipsInterpolate *interpolate,
 {
 	const int ps = IM_IMAGE_SIZEOF_PEL( in->im );
 
-	/* We know x/y are always positive, so we can just (int) them.
-	 */
-	const int xi = (int) (x + 0.5);
-	const int yi = (int) (y + 0.5);
+	const int xi = (int) x;
+	const int yi = (int) y;
 
 	const VipsPel *p = IM_REGION_ADDR( in, xi, yi );
 	VipsPel *q = (VipsPel *) out;