diff --git a/cmd/mtseeder/baselevel.go b/cmd/mtseeder/baselevel.go
index 8b13cdf..f9503bb 100644
--- a/cmd/mtseeder/baselevel.go
+++ b/cmd/mtseeder/baselevel.go
@@ -15,10 +15,7 @@ import (
 )
 
 const (
-	width          = 18
-	height         = 18
-	baseLevelDir   = "8"
-	yOrderCapacity = 512
+	baseLevelDir = "8"
 )
 
 type blockPos struct {
diff --git a/cmd/mtwebmapper/web/index.html b/cmd/mtwebmapper/web/index.html
index 85345af..dd26a91 100644
--- a/cmd/mtwebmapper/web/index.html
+++ b/cmd/mtwebmapper/web/index.html
@@ -48,7 +48,7 @@
     <script type="text/javascript" src="js/leaflet.awesome-markers.js"></script>
     <script>
 
-var useWebsocket = false; // Set to true if you want websocket support
+var useWebsocket = true; // Set to true if you want websocket support
 
 L.Projection.NoWrap = {
     project: function (latlng) {
diff --git a/common/coords.go b/common/coords.go
index c2816e9..c4b20b6 100644
--- a/common/coords.go
+++ b/common/coords.go
@@ -145,10 +145,6 @@ func CoordToInterleaved(c Coord) (result int64) {
 	return
 }
 
-func invert16(x int16) int16 {
-	return -x - 1
-}
-
 func InterleavedToCoord(pos int64) Coord {
 	const end = 1 << (numBitsPerComponent + 1)
 	var x, y, z int16
diff --git a/common/coords_test.go b/common/coords_test.go
index 011b05f..519ac4a 100644
--- a/common/coords_test.go
+++ b/common/coords_test.go
@@ -5,7 +5,6 @@
 package common
 
 import (
-	"math"
 	"math/rand"
 	"testing"
 )
@@ -181,15 +180,6 @@ func outsiders(zmin, zmax int64, fn func(int64)) {
 	}
 }
 
-func TestInvert16(t *testing.T) {
-	if invert16(math.MaxInt16) != math.MinInt16 {
-		t.Errorf("invert16(max) != min\n")
-	}
-	if invert16(math.MinInt16) != math.MaxInt16 {
-		t.Errorf("invert16(max) != min\n")
-	}
-}
-
 func TestBigMin(t *testing.T) {
 	const tries = 20
 	for i := 0; i < tries; i++ {