diff --git a/mParticle-Apple-SDK/Utils/MPIHasher.swift b/mParticle-Apple-SDK/Utils/MPIHasher.swift
index 37281ab3..f12d9aa2 100644
--- a/mParticle-Apple-SDK/Utils/MPIHasher.swift
+++ b/mParticle-Apple-SDK/Utils/MPIHasher.swift
@@ -30,7 +30,7 @@ import Foundation
        
         var hash: Int32 = 0
         for byte in dataToHash {
-            hash = ((hash << 5) &- hash) + Int32(byte);
+            hash = ((hash << 5) &- hash) &+ Int32(byte);
         }
         
         return String(hash)