diff --git a/changelog.txt b/changelog.txt
index e882043..a617719 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -5,6 +5,8 @@ Version: 3.1.0
     - Migration and siege groups now try to avoid chunks with existing enemy structures
   Tweaks:
     - Runtime number generator just uses the map seed now
+  Bugfixes:
+    - Fixed the period of the xor number generator being cut in half
 
 ---------------------------------------------------------------------------------------------------
 Version: 3.0.3
diff --git a/libs/MathUtils.lua b/libs/MathUtils.lua
index 0320727..8fe29f7 100644
--- a/libs/MathUtils.lua
+++ b/libs/MathUtils.lua
@@ -73,14 +73,13 @@ function mathUtils.xorRandom(state)
     local lshift = bit32.lshift
     local rshift = bit32.rshift
 
-    state = state + 21594771
+    local seed = state + 32685453
 
     return function()
-        state = xor(state, lshift(state, 13))
-        state = xor(state, rshift(state, 17))
-        state = xor(state, lshift(state, 5))
-        state = state % 2147483647
-        return state * 4.65661287525e-10
+        seed = xor(seed, lshift(seed, 13))
+        seed = xor(seed, rshift(seed, 17))
+        seed = xor(seed, lshift(seed, 5))
+        return seed * 2.32830643654e-10 -- 2.32830643654e-10 = 1 / 2^32, 2.32830643708e-10 = 1 / ((2^32)-1)
     end
 end