diff --git a/_constraints b/_constraints
index 9f49fd7..e01d525 100644
--- a/_constraints
+++ b/_constraints
@@ -7,7 +7,6 @@
     <hardware>
       <cpu>
         <flag>pclmulqdq</flag>
-        <flag>sse2</flag>
         <flag>sse4_1</flag>
       </cpu>
     </hardware>