diff --git a/tc/f_u32.c b/tc/f_u32.c
index 479b3f1..a8d07b3 100644
--- a/tc/f_u32.c
+++ b/tc/f_u32.c
@@ -382,8 +382,7 @@ static int parse_ip6_addr(int *argc_p, char ***argv_p,
 
 	plen = addr.bitlen;
 	for (i=0; i<plen; i+=32) {
-//		if (((i+31)&~0x1F)<=plen) {
-		if (i + 31 <= plen) {
+		if (i + 31 < plen) {
 			res = pack_key(sel, addr.data[i/32],
 				       0xFFFFFFFF, off+4*(i/32), offmask);
 			if (res < 0)