diff --git a/sphinx.go b/sphinx.go
index 501c061..4cb43d2 100644
--- a/sphinx.go
+++ b/sphinx.go
@@ -95,7 +95,7 @@ type OnionPacket struct {
 	// only defined version type.
 	Version byte
 
-	// EphemeralKey is the public key that each hop will used in
+	// EphemeralKey is the public key that each hop will use in
 	// combination with the private key in an ECDH to derive the shared
 	// secret used to check the HMAC on the packet and also decrypted the
 	// routing information.