diff --git a/paillier.go b/paillier.go
index fc501e5..9a2ab6c 100644
--- a/paillier.go
+++ b/paillier.go
@@ -7,7 +7,7 @@ import (
 )
 
 type PublicKey struct {
-	N *big.Int // usually G is set to N+1
+	N *big.Int
 }
 
 func (this *PublicKey) GetBSON() (interface{}, error) {
diff --git a/thresholdkey.go b/thresholdkey.go
index c76bb6c..3ade718 100644
--- a/thresholdkey.go
+++ b/thresholdkey.go
@@ -14,7 +14,7 @@ type ThresholdKey struct {
 	Threshold                      int
 	V                              *big.Int
 	Vi                             []*big.Int
-	G                              *big.Int
+	G                              *big.Int // usually G is set to N+1
 }
 
 // returns the value of (4*delta**2)** -1  mod n