diff --git a/xbyak/xbyak_util.h b/xbyak/xbyak_util.h
index afe536a4..e90af652 100644
--- a/xbyak/xbyak_util.h
+++ b/xbyak/xbyak_util.h
@@ -27,7 +27,7 @@
 #include "xbyak.h"
 #endif // XBYAK_ONLY_CLASS_CPU
 
-#if defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64)
+#if defined(__i386__) || (defined(__x86_64__) && !defined(__arm64ec__)) || defined(_M_IX86) || (defined(_M_X64) && !defined(_M_ARM64EC))
 	#define XBYAK_INTEL_CPU_SPECIFIC
 #endif