diff --git a/libnfc/drivers/pn53x_usb.c b/libnfc/drivers/pn53x_usb.c
index d990b43..69d6c71 100644
--- a/libnfc/drivers/pn53x_usb.c
+++ b/libnfc/drivers/pn53x_usb.c
@@ -369,9 +369,7 @@ pn53x_usb_open(const nfc_context *context, const nfc_connstring connstring)
         case SONY_PN531:
           CHIP_DATA(pnd)->timer_correction = 54;
           break;
-        case SONY_RCS360:
-        case SONY_RCS380:
-        case UNKNOWN:
+        default:
           CHIP_DATA(pnd)->timer_correction = 0;   // TODO: allow user to know if timed functions are available
           break;
       }
@@ -700,14 +698,6 @@ pn53x_usb_set_property_bool(nfc_device *pnd, const nfc_property property, const
           return res;
       }
       break;
-    case NXP_PN531:
-    case NXP_PN533:
-    case SONY_PN531:
-    case SONY_RCS360:
-    case SONY_RCS380:
-    case UNKNOWN:
-      // Nothing to do.
-      break;
   }
   return NFC_SUCCESS;
 }