diff --git a/include/cpuinfo.h b/include/cpuinfo.h
index 2d74b62f..00d1f295 100644
--- a/include/cpuinfo.h
+++ b/include/cpuinfo.h
@@ -18,7 +18,8 @@
 #define CPUINFO_ARCH_X86 1
 #endif
 
-#if defined(__x86_64__) || defined(__x86_64) || defined(_M_X64) || defined(_M_AMD64)
+#if defined(__x86_64__) || defined(__x86_64) || (defined(_M_X64) && !defined(_M_ARM64EC)) || \
+	(defined(_M_AMD64) && !defined(_M_ARM64EC))
 #define CPUINFO_ARCH_X86_64 1
 #endif
 
@@ -26,7 +27,7 @@
 #define CPUINFO_ARCH_ARM 1
 #endif
 
-#if defined(__aarch64__) || defined(_M_ARM64)
+#if defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC)
 #define CPUINFO_ARCH_ARM64 1
 #endif