diff --git a/src/libsodium/crypto_stream/salsa20/amd64_xmm6/stream_salsa20_amd64_xmm6.S b/src/libsodium/crypto_stream/salsa20/amd64_xmm6/stream_salsa20_amd64_xmm6.S
index f2415685..535ccdd1 100644
--- a/src/libsodium/crypto_stream/salsa20/amd64_xmm6/stream_salsa20_amd64_xmm6.S
+++ b/src/libsodium/crypto_stream/salsa20/amd64_xmm6/stream_salsa20_amd64_xmm6.S
@@ -1,4 +1,4 @@
-#if defined(__amd64) || defined(__amd64__) || defined(__x86_64__)
+#ifdef HAVE_AMD64_ASM
 
 .text
 .p2align 5