diff --git a/init.lua b/init.lua
index 95a3f4b..9e723d6 100644
--- a/init.lua
+++ b/init.lua
@@ -52,16 +52,10 @@ local ferment = {
 	{"default:papyrus", modname .. ":biofuel"},
 	{"farming:wheat", modname .. ":biofuel"},
 	{"farming:corn", modname .. ":biofuel"},
-	{"farming:baked_potato", modname .. ":biofuel"}
+	{"farming:baked_potato", modname .. ":biofuel"},
+    {"farming:potato", modname .. ":biofuel"}
 }
 
-local function get_pointer_angle(energy)
-    local angle = energy * 18
-    angle = angle - 90
-    angle = angle * -1
-	return angle
-end
-
 -- distiller
 biofueldistiller_formspec = "size[8,9]"
 	.. "list[current_name;src;2,1;1,1;]"