diff --git a/impl/utils.hpp b/impl/utils.hpp
index fb660e7..9b32ba7 100644
--- a/impl/utils.hpp
+++ b/impl/utils.hpp
@@ -107,6 +107,9 @@ namespace SaturnMath
          */
         static constexpr uint32_t FastSqrt(uint32_t src)
         {
+            if (src == 0)
+                return 0;
+
             uint32_t baseEstimation = 1;
             uint32_t estimation = src >> 2;