diff --git a/lib/random/random.js b/lib/random/random.js
index 8983369..8986d47 100644
--- a/lib/random/random.js
+++ b/lib/random/random.js
@@ -13,6 +13,8 @@ class random {
   static init (seed) {
     if (seed === null || seed === undefined) {
       random.seed = new Date().getTime()
+    } else {
+      random.seed = seed
     }
 
     random.twister = new MersenneTwister()