diff --git a/subcommands/capture.go b/subcommands/capture.go
index a62f4db..efdee8b 100644
--- a/subcommands/capture.go
+++ b/subcommands/capture.go
@@ -18,11 +18,6 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-var (
-	SrcIp_client = net.IPv4(127, 0, 0, 1)
-	SrcIp_server = net.IPv4(243, 0, 0, 2)
-)
-
 func init() {
 	utils.RegisterCommand(&CaptureCMD{})
 }
diff --git a/subcommands/world/chunk_render.go b/subcommands/world/chunk_render.go
index 5960628..fa1265a 100644
--- a/subcommands/world/chunk_render.go
+++ b/subcommands/world/chunk_render.go
@@ -52,7 +52,7 @@ func chunkGetColorAt(c *chunk.Chunk, x uint8, y int16, z uint8) color.RGBA {
 	p := cube.Pos{int(x), int(y), int(z)}
 	have_up := false
 	p.Side(cube.FaceUp).Neighbours(func(neighbour cube.Pos) {
-		if neighbour.X() < 0 || neighbour.X() >= 16 || neighbour.Z() < 0 || neighbour.Z() >= 16 {
+		if neighbour.X() < 0 || neighbour.X() >= 16 || neighbour.Z() < 0 || neighbour.Z() >= 16 || neighbour.Y() > c.Range().Max() {
 			return
 		}
 		if !have_up {