diff --git a/lib/MiniDroneBtAdapter.js b/lib/MiniDroneBtAdapter.js
index 3704115..10325a4 100644
--- a/lib/MiniDroneBtAdapter.js
+++ b/lib/MiniDroneBtAdapter.js
@@ -403,7 +403,7 @@ class MiniDroneBtAdapter extends EventEmitter {
         const manufacturer = peripheral.advertisement.manufacturerData;
         const matchesFilter = localName === this.options.droneFilter;
 
-        const localNameMatch = matchesFilter || DRONE_PREFIXES.some((prefix) => localName.indexOf(prefix) >= 0);
+        const localNameMatch = matchesFilter || (typeof localName != 'undefined' && DRONE_PREFIXES.some((prefix) => localName.indexOf(prefix) >= 0));
         const manufacturerMatch = manufacturer && (MANUFACTURER_SERIALS.indexOf(manufacturer) >= 0);
 
           // Is TRUE according to droneFilter or if empty, for EITHER an "RS_" name OR manufacturer code.