--- a/devstatus.c
+++ b/devstatus.c
@@ -161,6 +161,10 @@
 private:
 public:
      void deviceinfoAsString(cDevice *d) {
+        cDvbDevice *dvb = dynamic_cast<cDvbDevice *>(d);
+        if (dvb == NULL)
+           return;
+
         struct dvb_frontend_info m_FrontendInfo;
         int m_Frontend;
         // fe_status_t status;
@@ -170,7 +174,7 @@
         char* output = NULL;
 
         #define FRONTEND_DEVICE "/dev/dvb/adapter%d/frontend%d"
-        cString dev = cString::sprintf(FRONTEND_DEVICE, d->CardIndex(), 0);
+        cString dev = cString::sprintf(FRONTEND_DEVICE, dvb->Adapter(), dvb->Frontend());
         m_Frontend = open(dev, O_RDONLY | O_NONBLOCK);
         if (m_Frontend < 0) {
            return;