diff --git a/src/util/supervector/arch/x86/impl.cpp b/src/util/supervector/arch/x86/impl.cpp
index 2d0d2e8a..48aa5018 100644
--- a/src/util/supervector/arch/x86/impl.cpp
+++ b/src/util/supervector/arch/x86/impl.cpp
@@ -277,23 +277,23 @@ template<>
 really_inline SuperVector<16> SuperVector<16>::alignr(SuperVector<16> &other, int8_t offset)
 {
 	switch(offset) {
-	case 0: return *this; break;
-	case 1: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 15)}; break;
-	case 2: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 14)}; break;
-	case 3: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 13)}; break;
-	case 4: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 12)}; break;
-	case 5: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 11)}; break;
-	case 6: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 10)}; break;
-	case 7: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 9)}; break;
+	case 0: return other; break;
+	case 1: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 1)}; break;
+	case 2: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 2)}; break;
+	case 3: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 3)}; break;
+	case 4: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 4)}; break;
+	case 5: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 5)}; break;
+	case 6: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 6)}; break;
+	case 7: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 7)}; break;
 	case 8: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 8)}; break;
-	case 9: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 7)}; break;
-	case 10: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 6)}; break;
-	case 11: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 5)}; break;
-	case 12: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 4)}; break;
-	case 13: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 3)}; break;
-	case 14: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 2)}; break;
-	case 15: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 1)}; break;
-	case 16: return other; break;
+	case 9: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 9)}; break;
+	case 10: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 10)}; break;
+	case 11: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 11)}; break;
+	case 12: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 12)}; break;
+	case 13: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 13)}; break;
+	case 14: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 14)}; break;
+	case 15: return {_mm_alignr_epi8(u.v128[0], other.u.v128[0], 15)}; break;
+	case 16: return *this; break;
 	default: break;
 	}
 	return *this;