diff --git a/invite/invite.go b/invite/invite.go
index a1b9199..478984f 100644
--- a/invite/invite.go
+++ b/invite/invite.go
@@ -53,7 +53,7 @@ func (i *Manager) Create(in store.Invite, user store.User) (string, error) {
 }
 
 func (i *Manager) createToken() (string, error) {
-	const letters = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-"
+	const letters = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
 	ret := make([]byte, 8)
 	for i := 0; i < 8; i++ {
 		num, err := rand.Int(rand.Reader, big.NewInt(int64(len(letters))))