diff --git a/lib/controller.js b/lib/controller.js
index 7cd30a84..170df8dd 100644
--- a/lib/controller.js
+++ b/lib/controller.js
@@ -687,8 +687,8 @@ controller.connectToNetwork = function(opts) {
       }
 
       if (security) {
-        if (securityOptions.indexOf(security) < 0) {
-          return reject(`"${security}" is not a valid security option. Please choose on of the following: ${securityOptions.join(', ')}`);
+        if (securityOptions.indexOf(security) === -1) {
+          return reject(`"${security}" is not a valid security option. Please choose one of the following: ${securityOptions.join(', ')}`);
         } else if (security.match(/wpa2?/)) {
           return reject(`"${security}" security is not yet implemented. Please see this issue for more details -> https://github.com/tessel/t2-cli/issues/803`);
         }
@@ -725,7 +725,7 @@ controller.createAccessPoint = function(opts) {
         reject('Invalid credentials. Must set a password with security option');
       }
 
-      if (security && securityOptions.indexOf(security) < 0) {
+      if (security && securityOptions.indexOf(security) === -1) {
         reject(`${security} is not a valid security option. Please choose on of the following: ${securityOptions.join(', ')}`);
       }