diff --git a/share/server/builtin.lua b/share/server/builtin.lua
index 2ec678b70..9f173f589 100644
--- a/share/server/builtin.lua
+++ b/share/server/builtin.lua
@@ -749,77 +749,6 @@ minetest.register_item(":", {
 	type = "none",
 })
 
---
--- Default material types
---
-
-function minetest.digprop_constanttime(time)
-	return {
-		diggability = "constant",
-		constant_time = time,
-	}
-end
-
-function minetest.digprop_stonelike(toughness)
-	return {
-		diggablity = "normal",
-		weight = toughness * 5,
-		crackiness = 1,
-		crumbliness = -0.1,
-		cuttability = -0.2,
-	}
-end
-
-function minetest.digprop_dirtlike(toughness)
-	return {
-		diggablity = "normal",
-		weight = toughness * 1.2,
-		crackiness = 0,
-		crumbliness = 1.2,
-		cuttability = -0.4,
-	}
-end
-
-function minetest.digprop_gravellike(toughness)
-	return {
-		diggablity = "normal",
-		weight = toughness * 2,
-		crackiness = 0.2,
-		crumbliness = 1.5,
-		cuttability = -1.0,
-	}
-end
-
-function minetest.digprop_woodlike(toughness)
-	return {
-		diggablity = "normal",
-		weight = toughness * 1.0,
-		crackiness = 0.75,
-		crumbliness = -1.0,
-		cuttability = 1.5,
-	}
-end
-
-function minetest.digprop_leaveslike(toughness)
-	return {
-		diggablity = "normal",
-		weight = toughness * (-0.5),
-		crackiness = 0,
-		crumbliness = 0,
-		cuttability = 2.0,
-	}
-end
-
-function minetest.digprop_glasslike(toughness)
-	return {
-		diggablity = "normal",
-		weight = toughness * 0.1,
-		crackiness = 2.0,
-		crumbliness = -1.0,
-		cuttability = -1.0,
-	}
-end
-
 --
 -- Creative inventory
 --