diff --git a/include/mbedtls/aesni.h b/include/mbedtls/aesni.h
index b16ccc3..49bc9e1 100644
--- a/include/mbedtls/aesni.h
+++ b/include/mbedtls/aesni.h
@@ -36,12 +36,10 @@
 #define MBEDTLS_AESNI_AES      0x02000000u
 #define MBEDTLS_AESNI_CLMUL    0x00000002u
 
-/* Can we do AESNI with inline assembly?
- * (Only implemented with gas syntax, only for 64-bit.)
- */
-#if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && \
-    (defined(__amd64__) || defined(__x86_64__))   &&  \
-    !defined(MBEDTLS_HAVE_X86_64)
+#if !defined(MBEDTLS_HAVE_X86_64) && \
+    (defined(__amd64__) || defined(__x86_64__) || \
+    defined(_M_X64) || defined(_M_AMD64)) && \
+    !defined(_M_ARM64EC)
 #define MBEDTLS_HAVE_X86_64
 #endif
 
@@ -78,7 +76,11 @@
  * favor the assembly-based implementation if it's available. We intend to
  * revise this in a later release of Mbed TLS 3.x. In the long run, we will
  * likely remove the assembly implementation. */
-#if defined(MBEDTLS_HAVE_X86_64)
+#if defined(MBEDTLS_HAVE_ASM) && \
+    defined(__GNUC__) && defined(MBEDTLS_HAVE_X86_64)
+/* Can we do AESNI with inline assembly?
+ * (Only implemented with gas syntax, only for 64-bit.)
+ */
 #define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
 #elif defined(MBEDTLS_AESNI_HAVE_INTRINSICS)
 #define MBEDTLS_AESNI_HAVE_CODE 2 // via intrinsics