diff --git a/src/arch/tzcnt.inc b/src/arch/tzcnt.inc
index 55d84e769..719761e79 100644
--- a/src/arch/tzcnt.inc
+++ b/src/arch/tzcnt.inc
@@ -354,7 +354,7 @@ static int has_tzcnt_hard()
         #if defined(_MSC_VER) && !defined(__clang__)
             static unsigned int tzcnt64_msvc_x64(unsigned long long x)
             {
-                return __builtin_ctzl(x);
+                return _tzcnt_u64(x);
             }
         #elif defined(__GNUC__) || defined(__clang__)
             static unsigned int tzcnt64_gcc_x64(unsigned long long x)