diff --git a/map180/nzmap/nzmap.go b/map180/nzmap/nzmap.go
index 9b554c4..babe53f 100644
--- a/map180/nzmap/nzmap.go
+++ b/map180/nzmap/nzmap.go
@@ -261,7 +261,7 @@ func (pts Points) Medium(b *bytes.Buffer) {
 			yi, yf := math.Modf(v.Latitude*10 + 480.0)
 			y := int(yi)
 
-			if x >= 0 && x < 150 && y >= 0 && y < 140 {
+			if x >= 0 && x < 150 && y >= 0 && y < 139 {
 				p = nzMediumPts[int(x)][y]
 				pp = nzMediumPts[x+1][y+1]
 				pts[i].x = p.x + int(float64(pp.x-p.x)*xf)
diff --git a/weft/assets_test.go b/weft/assets_test.go
index 94fee48..57b748c 100644
--- a/weft/assets_test.go
+++ b/weft/assets_test.go
@@ -331,7 +331,7 @@ func TestCreateImportTag(t *testing.T) {
 			"No nonce, one module file",
 			"",
 			map[string]*asset{
-				"test.mjs": &asset{
+				"test.mjs": {
 					hashedPath: "/assets/js/hashprefix-test.mjs",
 					sri:        "sha384-abcd",
 				},
@@ -351,11 +351,11 @@ func TestCreateImportTag(t *testing.T) {
 			"Nonce present, two module files",
 			"abcdefg",
 			map[string]*asset{
-				"test1.mjs": &asset{
+				"test1.mjs": {
 					hashedPath: "/assets/js/hashprefix-test1.mjs",
 					sri:        "sha384-efgh",
 				},
-				"test2.mjs": &asset{
+				"test2.mjs": {
 					hashedPath: "/assets/js/hashprefix-test2.mjs",
 					sri:        "sha384-ijkl",
 				},