diff --git a/src/libsodium/crypto_generichash/blake2/ref/blake2b-round.h b/src/libsodium/crypto_generichash/blake2/ref/blake2b-round.h
index dad8a1d9..e92c3fb5 100644
--- a/src/libsodium/crypto_generichash/blake2/ref/blake2b-round.h
+++ b/src/libsodium/crypto_generichash/blake2/ref/blake2b-round.h
@@ -18,8 +18,8 @@
 # error BLAKE2_USE_SSSE2 must be defined in order to use this file
 #endif
 
-#define LOADU(p)  _mm_loadu_si128( (const __m128i *)(p) )
-#define STOREU(p,r) _mm_storeu_si128((__m128i *)(p), r)
+#define LOADU(p)  _mm_loadu_si128( (const __m128i *)(const void *)(p) )
+#define STOREU(p,r) _mm_storeu_si128((__m128i *)(void *)(p), r)
 
 #define TOF(reg) _mm_castsi128_ps((reg))
 #define TOI(reg) _mm_castps_si128((reg))