diff --git a/docs/changes.html b/docs/changes.html
index 374d407..65b6e1d 100644
--- a/docs/changes.html
+++ b/docs/changes.html
@@ -179,7 +179,7 @@
                 <li><span class="code">uuid()</span>: added MACs</li>
                 <li><span class="code">uuid()</span>: better Raspberry Pi hardware ID</li>
                 <li><span class="code">getData()</span>: support for passing parameters and filters (see <a href="general.html">section General / getData</a>)</li>
-                <li><span class="code">Apple M1 Silicon</span> extended support (now ereything supported exept of cpu temperature)</li>
+                <li><span class="code">Apple M1 Silicon</span> extended support (now everything supported except of cpu temperature)</li>
                 <li>updated TypeScript definitions </li>
               </ul>
               <h4>Test full functionality and view Version 5 results</h4>
diff --git a/docs/index.html b/docs/index.html
index 4167c2c..8fe9cc1 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -201,7 +201,7 @@
     </div>
     <div class="row number-section">
       <div class="col-xl-4 col-lg-4 col-md-4 col-12">
-        <div class="numbers">12,898</div>
+        <div class="numbers">13,024</div>
         <div class="title">Lines of code</div>
       </div>
       <div class="col-xl-4 col-lg-4 col-md-4 col-12">
@@ -209,7 +209,7 @@
         <div class="title">Downloads last month</div>
       </div>
       <div class="col-xl-4 col-lg-4 col-md-4 col-12">
-        <div class="numbers">375</div>
+        <div class="numbers">376</div>
         <div class="title">Dependents</div>
       </div>
     </div>
diff --git a/lib/wifi.js b/lib/wifi.js
index 0f28df1..21a4d98 100644
--- a/lib/wifi.js
+++ b/lib/wifi.js
@@ -154,8 +154,8 @@ function wifiNetworks(callback) {
                   iface = iwconfigParts[i].split(' ')[0];
                 }
               }
-              if (iface()) {
-                let iwlistParts = execSync(`export LC_ALL=C; iwlist ${iface} sscan 2>/dev/null; unset LC_ALL`).toString().split('        Cell ');
+              if (iface) {
+                let iwlistParts = execSync(`export LC_ALL=C; iwlist ${iface} scan 2>/dev/null; unset LC_ALL`).toString().split('        Cell ');
                 if (iwlistParts.length > 1) {
                   iwlistParts.shift();
                   for (let i = 0; i < iwlistParts.length; i++) {
@@ -180,7 +180,7 @@ function wifiNetworks(callback) {
                     let wpaFlag = '';
                     lines.forEach(function (line) {
                       const l = line.trim().toLowerCase();
-                      if (l.indexOf('group cipher')) {
+                      if (l.indexOf('group cipher') >= 0) {
                         if (wpaFlag) {
                           wpaFlags.push(wpaFlag);
                         }
@@ -189,19 +189,19 @@ function wifiNetworks(callback) {
                           wpaFlag = parts[1].trim();
                         }
                       }
-                      if (l.indexOf('pairwise cipher')) {
+                      if (l.indexOf('pairwise cipher') >= 0) {
                         const parts = l.split(':');
                         if (parts.length > 1) {
-                          if (parts[i].indexOf('tkip')) { wpaFlag = wpaFlag ? 'TKIP/' + wpaFlag : 'TKIP'; }
-                          else if (parts[i].indexOf('ccmp')) { wpaFlag = wpaFlag ? 'CCMP/' + wpaFlag : 'CCMP'; }
-                          else if (parts[i].indexOf('proprietary')) { wpaFlag = wpaFlag ? 'PROP/' + wpaFlag : 'PROP'; }
+                          if (parts[i].indexOf('tkip')) { wpaFlag = (wpaFlag ? 'TKIP/' + wpaFlag : 'TKIP'); }
+                          else if (parts[i].indexOf('ccmp')) { wpaFlag = (wpaFlag ? 'CCMP/' + wpaFlag : 'CCMP'); }
+                          else if (parts[i].indexOf('proprietary')) { wpaFlag = (wpaFlag ? 'PROP/' + wpaFlag : 'PROP'); }
                         }
                       }
-                      if (l.indexOf('Authentication Suites')) {
+                      if (l.indexOf('authentication suites') >= 0) {
                         const parts = l.split(':');
                         if (parts.length > 1) {
-                          if (parts[i].indexOf('802.1x')) { wpaFlag = wpaFlag ? '802.1x/' + wpaFlag : '802.1x'; }
-                          else if (parts[i].indexOf('psk')) { wpaFlag = wpaFlag ? 'PSK/' + wpaFlag : 'PSK'; }
+                          if (parts[i].indexOf('802.1x')) { wpaFlag = (wpaFlag ? '802.1x/' + wpaFlag : '802.1x'); }
+                          else if (parts[i].indexOf('psk')) { wpaFlag = (wpaFlag ? 'PSK/' + wpaFlag : 'PSK'); }
                         }
                       }
                     });