diff --git a/src/libsodium/crypto_generichash/blake2/ref/blake2b-compress-sse41.c b/src/libsodium/crypto_generichash/blake2/ref/blake2b-compress-sse41.c
index 8c70e813..9426db7f 100644
--- a/src/libsodium/crypto_generichash/blake2/ref/blake2b-compress-sse41.c
+++ b/src/libsodium/crypto_generichash/blake2/ref/blake2b-compress-sse41.c
@@ -12,9 +12,6 @@
 #pragma GCC target("ssse3")
 #pragma GCC target("sse4.1")
 
-#ifdef _MSC_VER
-# include <intrin.h> /* for _mm_set_epi64x */
-#endif
 #include <emmintrin.h>
 #include <tmmintrin.h>
 #include <smmintrin.h>