diff --git a/library/aesce.h b/library/aesce.h
index a29da34..55cbd7e 100644
--- a/library/aesce.h
+++ b/library/aesce.h
@@ -31,13 +31,13 @@
 #include "mbedtls/aes.h"
 
 #if !defined(MBEDTLS_HAVE_ARM64)
-#if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && \
-    defined(__aarch64__)
+#if defined(__GNUC__) && defined(__aarch64__)
 #define MBEDTLS_HAVE_ARM64
 #endif
 
 /* MSVC */
-#if defined(_M_ARM64) || defined(_M_ARM64EC)
+#if defined(_MSC_VER) && _MSC_VER >=1929 && \
+    (defined(_M_ARM64) || defined(_M_ARM64EC))
 #define MBEDTLS_HAVE_ARM64
 #endif
 #endif