diff --git a/libsharp/sharp_vecsupport.h b/libsharp/sharp_vecsupport.h
index cae1184..b26a539 100644
--- a/libsharp/sharp_vecsupport.h
+++ b/libsharp/sharp_vecsupport.h
@@ -92,7 +92,7 @@ typedef __m128d Tm;
 #if defined(__SSE4_1__)
 #define vblend__(m,a,b) _mm_blendv_pd(b,a,m)
 #else
-static inline Tv vblend(Tv m, Tv a, Tv b)
+static inline Tv vblend__(Tv m, Tv a, Tv b)
   { return _mm_or_pd(_mm_and_pd(a,m),_mm_andnot_pd(m,b)); }
 #endif
 #define vzero _mm_setzero_pd()
@@ -201,7 +201,7 @@ typedef __mmask8 Tm;
 #define vfmseq(a,b,c) a=_mm512_fnmadd_pd(b,c,a)
 #define vfmaaeq(a,b,c,d,e) a=_mm512_fmadd_pd(d,e,_mm512_fmadd_pd(b,c,a))
 #define vfmaseq(a,b,c,d,e) a=_mm512_fnmadd_pd(d,e,_mm512_fmadd_pd(b,c,a))
-#define vneg(a) (__m512d)_mm512_xor_epi64((__m512i)_mm512_set1_pd(-0.),(__m512i)a)
+#define vneg(a) _mm512_mul_pd(a,_mm512_set1_pd(-1.))
 #define vload(a) _mm512_set1_pd(a)
 #define vabs(a) (__m512d)_mm512_andnot_epi64((__m512i)_mm512_set1_pd(-0.),(__m512i)a)
 #define vsqrt(a) _mm512_sqrt_pd(a)