diff --git a/gts/src/GamestatsSessionPlat.cs b/gts/src/GamestatsSessionPlat.cs
index 38627ca6..04fe57a4 100644
--- a/gts/src/GamestatsSessionPlat.cs
+++ b/gts/src/GamestatsSessionPlat.cs
@@ -70,7 +70,7 @@ namespace PkmnFoundations.GTS
 
         private static int DecryptRNG(int prev)
         {
-            return (prev * 0x000244fd + 0x00006015) | 0x10000000;
+            return (prev * 0x000244fd + 0x00006015) & ~0x10000000;
         }
 
         public static String ResponseChecksum(byte[] responseArray)