diff --git a/init.lua b/init.lua
index 75c6472..03447e5 100644
--- a/init.lua
+++ b/init.lua
@@ -134,9 +134,9 @@ mobs:register_mob('zombies:normal', {
 
 
 --Spawn Functions
-mobs:register_spawn("zombies:1arm", {"cityscape:road_broken", "cityscape:sidewalk_broken"},14, 0, 70, 10, 170, false)
-mobs:register_spawn("zombies:crawler", {"cityscape:road_broken", "cityscape:sidewalk_broken"},14, 0, 70, 10, 170, false)
-mobs:register_spawn("zombies:normal", {"cityscape:road_broken", "cityscape:sidewalk_broken"},14, 0, 70, 10, 170, false)
+mobs:register_spawn("zombies:1arm", {"cityscape:road_broken", "cityscape:sidewalk_broken", "default:gravel",},15, 0, 70, 10, 170, false)
+mobs:register_spawn("zombies:crawler", {"cityscape:road_broken", "cityscape:sidewalk_broken", "default:gravel",},15, 0, 70, 10, 170, false)
+mobs:register_spawn("zombies:normal", {"cityscape:road_broken", "cityscape:sidewalk_broken", "default:gravel",},15, 0, 70, 10, 170, false)
 
 --Spawn Eggs
 mobs:register_egg("zombies:1arm", "One Armed Zombie", "something.png", 1)
diff --git a/readme.md b/license.txt
similarity index 55%
rename from readme.md
rename to license.txt
index 5edb3b1..fb0b15a 100644
--- a/readme.md
+++ b/license.txt
@@ -2,3 +2,5 @@ Zombie model derived from the default player model.
 
 Textures Created by me, Nathan
 CC by SA 3.0
+
+Code copy/pasted with minor changes from Tenplus1's mob API, licensed as MIT.
diff --git a/screenshot.png b/screenshot.png
new file mode 100644
index 0000000..f960973
Binary files /dev/null and b/screenshot.png differ