diff --git a/Gems/FastNoise/Code/External/FastNoise/FastNoise.cpp b/Gems/FastNoise/Code/External/FastNoise/FastNoise.cpp
index 51980ca08a..443fe0ce72 100644
--- a/Gems/FastNoise/Code/External/FastNoise/FastNoise.cpp
+++ b/Gems/FastNoise/Code/External/FastNoise/FastNoise.cpp
@@ -201,14 +201,14 @@ void FastNoise::SetSeed(int seed)
 
     std::mt19937_64 gen(seed);
 
-    for (int i = 0; i < 256; i++)
+    for (unsigned char i = 0; i < 256; i++)
         m_perm[i] = i;
 
     for (int j = 0; j < 256; j++)
     {
         int rng = (int)(gen() % (256 - j));
         int k = rng + j;
-        int l = m_perm[j];
+        unsigned char l = m_perm[j];
         m_perm[j] = m_perm[j + 256] = m_perm[k];
         m_perm[k] = l;
         m_perm12[j] = m_perm12[j + 256] = m_perm[j] % 12;