diff --git a/stripe.go b/stripe.go
index a8da4ec..74e83a5 100644
--- a/stripe.go
+++ b/stripe.go
@@ -35,7 +35,7 @@ func getstripepaymentintentHandler(response http.ResponseWriter, request *http.R
 		amount := 0
 		for _, tracker := range trackers {
 			items = strings.Split(tracker, ":")
-			if len(items) == 2 {
+			if len(items) >= 2 {
 				abo_count, err := strconv.Atoi(items[1])
 				if err == nil {
 					abo_years += abo_count
@@ -78,7 +78,7 @@ func HandlePayment(user string, charge_data string, amount int64) {
 			amount, _ := strconv.Atoi(res[2])
 			fmt.Printf("prolongActivation %s: %d\n", deveui, years)
 			prolongActivation(deveui, years)
-			line := fmt.Sprintf("%-30s %20s %10.2f\n", getDevAlias(deveui), getActiveUntil(deveui), float64(amount / 100))
+			line := fmt.Sprintf("%-30s %20s %10.2f\n", getDevAlias(deveui), getActiveUntil(deveui), float64(amount/100))
 			charge_data_email_text = charge_data_email_text + line
 		}
 	}