diff --git a/icapp.c b/icapp.c
index e1edfc7..8993a3a 100644
--- a/icapp.c
+++ b/icapp.c
@@ -1397,11 +1397,13 @@ unsigned bench32(unsigned char *in, unsigned n, unsigned char *out, unsigned cha
     case 51: TMBENCH("",l=v8nzenc128v32(   in, m, out)  ,n); 	    pr(l,n); TMBENCH2(" 51",v8nzdec128v32(     out, m, cpy)   ,n); break;
     case 52: TMBENCH("",l=v8ndenc128v32(   in, m, out)  ,n); 	    pr(l,n); TMBENCH2(" 52",v8nddec128v32(     out, m, cpy)   ,n); break;
     case 53: TMBENCH("",l=v8nd1enc128v32(  in, m, out)  ,n); 	    pr(l,n); TMBENCH2(" 53",v8nd1dec128v32(    out, m, cpy)   ,n); break;
+	  #endif
 
-    case 55: TMBENCH("",l=v8nenc256v32(    in, m, out)  ,n);        pr(l,n); TMBENCH2(" 55",v8ndec256v32(      out, m, cpy)   ,n); break;
-    case 56: TMBENCH("",l=v8nzenc256v32(   in, m, out)  ,n);        pr(l,n); TMBENCH2(" 56",v8nzdec256v32(     out, m, cpy)   ,n); break;
-    case 57: TMBENCH("",l=v8ndenc256v32(   in, m, out)  ,n);        pr(l,n); TMBENCH2(" 57",v8nddec256v32(     out, m, cpy)   ,n); break;
-    case 58: TMBENCH("",l=v8nd1enc256v32(  in, m, out)  ,n);        pr(l,n); TMBENCH2(" 58",v8nd1dec256v32(    out, m, cpy)   ,n); break;
+	  #ifdef AVX2
+    case 55: if(isa>=0x60) { TMBENCH("",l=v8nenc256v32(    in, m, out)  ,n);        pr(l,n); TMBENCH2(" 55",v8ndec256v32(      out, m, cpy)   ,n);} break;
+    case 56: if(isa>=0x60) { TMBENCH("",l=v8nzenc256v32(   in, m, out)  ,n);        pr(l,n); TMBENCH2(" 56",v8nzdec256v32(     out, m, cpy)   ,n);} break;
+    case 57: if(isa>=0x60) { TMBENCH("",l=v8ndenc256v32(   in, m, out)  ,n);        pr(l,n); TMBENCH2(" 57",v8nddec256v32(     out, m, cpy)   ,n);} break;
+    case 58: if(isa>=0x60) { TMBENCH("",l=v8nd1enc256v32(  in, m, out)  ,n);        pr(l,n); TMBENCH2(" 58",v8nd1dec256v32(    out, m, cpy)   ,n);} break;
 	  #endif
 	
     case 60: TMBENCH("",l=bvzzenc32(       in, m, out,0),n); 	    pr(l,n); TMBENCH2(" 60",bvzzdec32(         out, m, cpy,0) ,n); break; // bitio