Fixed import

app/src/main/java/eu/faircode/email/EntityAccount.java

@@ -257,6 +257,7 @@ public class EntityAccount extends EntityOrder implements Serializable {
             account.provider = json.getString("provider");
         account.user = json.getString("user");
         account.password = json.getString("password");
+        if (json.has("certificate_alias"))
             account.certificate_alias = json.getString("certificate_alias");
         if (json.has("realm"))
             account.realm = json.getString("realm");