diff --git a/src/main/java/kaptainwutax/seedcracker/util/Rand.java b/src/main/java/kaptainwutax/seedcracker/util/Rand.java
index cb79f2d..e045f46 100644
--- a/src/main/java/kaptainwutax/seedcracker/util/Rand.java
+++ b/src/main/java/kaptainwutax/seedcracker/util/Rand.java
@@ -22,6 +22,7 @@ public class Rand implements Cloneable {
 
     public void setSeed(long seed, boolean scramble) {
         this.seed = seed ^ (scramble ? JAVA_LCG.multiplier : 0L);
+        this.seed &= JAVA_LCG.modulo - 1;
     }
 
     public int next(int bits) {