diff --git a/api/api.lua b/api/api.lua
index 2e8bd5a..7f90705 100644
--- a/api/api.lua
+++ b/api/api.lua
@@ -347,8 +347,8 @@ function animalia.add_food_particle(self, item_name)
 	if def.tiles then
 		image = def.tiles[1].name or def.tiles[1]
 	end
-	if image and image ~= "" then
-		local crop = "^[sheet:4x4:" .. random(4) .. "," .. random(4)
+	if image then
+		local crop = "^[sheet:4x4:" .. random(0, 3) .. "," .. random(0, 3)
 		minetest.add_particlespawner({
 			pos = head_pos,
 			time = 0.5,