diff --git a/src/Standart.Hash.xxHash/xxHash128.XXH.cs b/src/Standart.Hash.xxHash/xxHash128.XXH.cs
index c1bb5a7..8e076f3 100644
--- a/src/Standart.Hash.xxHash/xxHash128.XXH.cs
+++ b/src/Standart.Hash.xxHash/xxHash128.XXH.cs
@@ -97,7 +97,7 @@ private static ulong XXH_mult32to64(ulong x, ulong y)
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private static uint128 XXH_mult64to128(ulong lhs, ulong rhs)
         {
-            if (Bmi2.IsSupported)
+            if (Bmi2.X64.IsSupported)
                 return XXH_mult64to128_bmi2(lhs, rhs);
             
             return XXH_mult64to128_scalar(lhs, rhs);
@@ -138,4 +138,4 @@ private static unsafe void XXH_writeLE64(byte* dst, ulong v64)
             *(ulong*) dst = v64;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/Standart.Hash.xxHash/xxHash3.XXH.cs b/src/Standart.Hash.xxHash/xxHash3.XXH.cs
index 71f210d..20234ab 100644
--- a/src/Standart.Hash.xxHash/xxHash3.XXH.cs
+++ b/src/Standart.Hash.xxHash/xxHash3.XXH.cs
@@ -96,7 +96,7 @@ private static unsafe void XXH_writeLE64(byte* dst, ulong v64)
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private static uint128 XXH_mult64to128(ulong lhs, ulong rhs)
         {
-            if (Bmi2.IsSupported)
+            if (Bmi2.X64.IsSupported)
                 return XXH_mult64to128_bmi2(lhs, rhs);
 
             return XXH_mult64to128_scalar(lhs, rhs);
@@ -131,4 +131,4 @@ private static uint128 XXH_mult64to128_scalar(ulong lhs, ulong rhs)
             return r128;
         }
     }
-}
\ No newline at end of file
+}