diff --git a/lib/wifi.js b/lib/wifi.js
index af0e426..8b52cfb 100644
--- a/lib/wifi.js
+++ b/lib/wifi.js
@@ -117,7 +117,7 @@ function wifiChannelFromFrequencs(frequency) {
   let channel = 0;
   for (let key in _wifi_frequencies) {
     if ({}.hasOwnProperty.call(_wifi_frequencies, key)) {
-      if (_wifi_frequencies[key] === frequency) { channel = key; }
+      if (_wifi_frequencies[key] === frequency) { channel = util.toInt(key); }
     }
   }
   return channel;