diff --git a/api/api.go b/api/api.go
index 89cdb1fa6..6a53bc399 100644
--- a/api/api.go
+++ b/api/api.go
@@ -44,7 +44,7 @@ const (
 
 // ChargeStatusString converts a string to ChargeStatus
 func ChargeStatusString(s string) (ChargeStatus, error) {
-	status := strings.ToUpper(s)
+	status := strings.ToUpper(strings.TrimSpace(strings.Trim(s, "\x00")))
 	switch s1 := status[:1]; s1 {
 	case "A", "B":
 		return ChargeStatus(s1), nil