diff --git a/crypto/sha/sha512.c b/crypto/sha/sha512.c
index 5e77a1e..beb0f8c 100644
--- a/crypto/sha/sha512.c
+++ b/crypto/sha/sha512.c
@@ -78,10 +78,14 @@
 #if !defined(OPENSSL_NO_ASM) &&                         \
     (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
      defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
-#define SHA512_BLOCK_CAN_MANAGE_UNALIGNED_DATA
 #define SHA512_ASM
 #endif
 
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
+    defined(__ARM_FEATURE_UNALIGNED)
+#define SHA512_BLOCK_CAN_MANAGE_UNALIGNED_DATA
+#endif
+
 int SHA384_Init(SHA512_CTX *sha) {
   sha->h[0] = OPENSSL_U64(0xcbbb9d5dc1059ed8);
   sha->h[1] = OPENSSL_U64(0x629a292a367cd507);