diff --git a/bitunpack.c b/bitunpack.c
index e722b1e..1dd7800 100644
--- a/bitunpack.c
+++ b/bitunpack.c
@@ -156,7 +156,7 @@ size_t bitnfunpack64( unsigned char *__restrict in, size_t n, uint64_t *__restri
 #define mm256_maskz_expand_epi32(_m_,_v_) _mm256_maskz_expand_epi32(_m_,_v_)
 #define mm256_maskz_loadu_epi32( _m_,_v_) _mm256_maskz_loadu_epi32( _m_,_v_)
     #else
-#if !(defined(_M_X64) || defined(__amd64__)) && (defined(__i386__) || defined(_M_IX86))
+#if !(defined(_M_X64) || defined(__amd64__)) && (defined(__i386__) || defined(_M_IX86)) && !defined(__clang__)
 static inline __m128i _mm_cvtsi64_si128(__int64 a) {  return _mm_loadl_epi64((__m128i*)&a); }
     #endif
 static ALIGNED(unsigned char, permv[256][8], 32) = {