diff --git a/.wolfssl_known_macro_extras b/.wolfssl_known_macro_extras
index d19f3af727..0b9498777e 100644
--- a/.wolfssl_known_macro_extras
+++ b/.wolfssl_known_macro_extras
@@ -1136,7 +1136,6 @@ __XTENSA__
 __ZEPHYR__
 __aarch64__
 __alpha__
-__arch64__
 __arm__
 __clang__
 __clang_major__
diff --git a/wolfssl/wolfcrypt/wc_mldsa.h b/wolfssl/wolfcrypt/wc_mldsa.h
index 58a94bd771..12384878e4 100644
--- a/wolfssl/wolfcrypt/wc_mldsa.h
+++ b/wolfssl/wolfcrypt/wc_mldsa.h
@@ -105,7 +105,7 @@
 /* Macros Definitions */
 
 #ifndef WOLFSSL_MLDSA_ALIGNMENT
-    #if defined(__arch64__)
+    #if defined(__aarch64__)
         #define WOLFSSL_MLDSA_ALIGNMENT     8
     #elif defined(__arm__)
         #define WOLFSSL_MLDSA_ALIGNMENT     4