diff --git a/share/poly.go b/share/poly.go
index 5c800cb21..b76324e6d 100644
--- a/share/poly.go
+++ b/share/poly.go
@@ -229,7 +229,7 @@ func xyScalar(g kyber.Group, shares []*PriShare, t, n int) (map[int]kyber.Scalar
 	x := make(map[int]kyber.Scalar)
 	y := make(map[int]kyber.Scalar)
 	for _, s := range sorted {
-		if s == nil || s.V == nil || s.I < 0 {
+		if s == nil || s.V == nil {
 			continue
 		}
 		idx := int(s.I)
@@ -429,7 +429,7 @@ func xyCommit(g kyber.Group, shares []*PubShare, t, n int) (map[int]kyber.Scalar
 	y := make(map[int]kyber.Point)
 
 	for _, s := range sorted {
-		if s == nil || s.V == nil || s.I < 0 {
+		if s == nil || s.V == nil {
 			continue
 		}
 		idx := int(s.I)
diff --git a/share/vss/rabin/vss.go b/share/vss/rabin/vss.go
index 53257f977..1746867f0 100644
--- a/share/vss/rabin/vss.go
+++ b/share/vss/rabin/vss.go
@@ -574,7 +574,7 @@ func (a *aggregator) VerifyDeal(d *Deal, inclusion bool) error {
 	if fi.I != gi.I {
 		return errors.New("vss: not the same index for f and g share in Deal")
 	}
-	if fi.I < 0 || fi.I >= uint32(len(a.verifiers)) {
+	if fi.I >= uint32(len(a.verifiers)) {
 		return errors.New("vss: index out of bounds in Deal")
 	}
 	// compute fi * G + gi * H