diff --git a/src/libsodium/crypto_verify/sodium/verify.c b/src/libsodium/crypto_verify/sodium/verify.c
index fc0d30ad..6140d04e 100644
--- a/src/libsodium/crypto_verify/sodium/verify.c
+++ b/src/libsodium/crypto_verify/sodium/verify.c
@@ -5,6 +5,7 @@
 #include "crypto_verify_16.h"
 #include "crypto_verify_32.h"
 #include "crypto_verify_64.h"
+#include "private/sse2_64_32.h"
 
 size_t
 crypto_verify_16_bytes(void)
diff --git a/src/libsodium/include/sodium/private/sse2_64_32.h b/src/libsodium/include/sodium/private/sse2_64_32.h
index d0455b41..1c1fd813 100644
--- a/src/libsodium/include/sodium/private/sse2_64_32.h
+++ b/src/libsodium/include/sodium/private/sse2_64_32.h
@@ -11,6 +11,9 @@
     !(defined(__amd64) || defined(__amd64__) || defined(__x86_64__) || \
       defined(_M_X64) || defined(_M_AMD64))
 
+# ifndef __SSE2__
+#  define __SSE2__
+# endif
 # include <emmintrin.h>
 # include <stdint.h>