diff --git a/thirdparty/mbedtls/include/mbedtls/aesni.h b/thirdparty/mbedtls/include/mbedtls/aesni.h
index 6741dead05..6c545bd4a3 100644
--- a/thirdparty/mbedtls/include/mbedtls/aesni.h
+++ b/thirdparty/mbedtls/include/mbedtls/aesni.h
@@ -54,9 +54,10 @@
  *       macros that may change in future releases.
  */
 #undef MBEDTLS_AESNI_HAVE_INTRINSICS
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && (defined(_M_AMD64) || defined(_M_IX86))
 /* Visual Studio supports AESNI intrinsics since VS 2008 SP1. We only support
- * VS 2013 and up for other reasons anyway, so no need to check the version. */
+ * VS 2013 and up for other reasons anyway, so no need to check the version.
+ * Only supported on x64 and x86. */
 #define MBEDTLS_AESNI_HAVE_INTRINSICS
 #endif
 /* GCC-like compilers: currently, we only support intrinsics if the requisite
