diff --git a/locale/gen_combined/grilledham_map_gen/map_gen.lua b/locale/gen_combined/grilledham_map_gen/map_gen.lua
index 1682e88a..d9fa884e 100644
--- a/locale/gen_combined/grilledham_map_gen/map_gen.lua
+++ b/locale/gen_combined/grilledham_map_gen/map_gen.lua
@@ -1,5 +1,5 @@
 require("locale.gen_combined.grilledham_map_gen.builders")
-require("locale.gen_shared.poisson")
+require("locale.utils.poisson")
 
 local Thread = require "locale.utils.Thread"
 
@@ -216,7 +216,7 @@ function check_decorative(tile, x, y)
    for _,e in ipairs(options) do
       name = e[1]
       high_roll = e[2]
-      if poison_rng_next(high_roll / 2 ) == 1 then
+      if poisson_rng_next(high_roll / 2 ) == 1 then
          table.insert(tile_decoratives, {name=name, amount=1, position={x,y}})
       end
    end
@@ -323,11 +323,10 @@ function check_entities(tile, x, y)
    for _,e in ipairs(options) do
       name = e[1]
       high_roll = e[2]
-      if poison_rng_next( high_roll / 2 ) == 1 then
+      if poisson_rng_next( high_roll / 2 ) == 1 then
          table.insert(tile_entity_list, {name=name, position={x,y}})
       end
    end
 
    return tile_entity_list
-
 end
diff --git a/locale/gen_shared/poisson.lua b/locale/utils/poisson_rng.lua
similarity index 79%
rename from locale/gen_shared/poisson.lua
rename to locale/utils/poisson_rng.lua
index 7d9c1ac3..1a54e1b0 100644
--- a/locale/gen_shared/poisson.lua
+++ b/locale/utils/poisson_rng.lua
@@ -1,3 +1,5 @@
+--Author: Valansch
+
 local function generate_pmf_chart(l)
  chart = {[0] = math.exp(-l)}
  for k=1,(l*2 + 1) do
@@ -15,13 +17,14 @@ local function generate_poisson_set(l, n) --n defines the resolution
    table.insert(set,x)
   end
  end
+ set._n = #set
  return set
 end
 
 global.poisson_set = {}
-function poison_rng_next(l)
+function poisson_rng_next(l)
   if not global.poisson_set[l] then
     global.poisson_set[l] = generate_poisson_set(l, 1000)
   end
- return global.poisson_set[l][math.random(1000)]
+ return global.poisson_set[l][math.random(global.poisson_set[l]._n)]
 end