diff --git a/client/modules/operation/get-next-current-name.js b/client/modules/operation/get-next-current-name.js
index a27e9daa..d2b96545 100644
--- a/client/modules/operation/get-next-current-name.js
+++ b/client/modules/operation/get-next-current-name.js
@@ -2,7 +2,7 @@
 
 const currify = require('currify');
 
-const not = currify((array, value) => !~array.indexOf(value));
+const not = currify((array, value) => !array.includes(value));
 const notOneOf = currify((a, b) => a.filter(not(b)));
 
 module.exports = (currentName, names, removedNames) => {
diff --git a/server/prefixer.js b/server/prefixer.js
index 3b5f3a95..47675070 100644
--- a/server/prefixer.js
+++ b/server/prefixer.js
@@ -7,7 +7,7 @@ module.exports = (value) => {
     if (value.length === 1)
         return '';
     
-    if (value && !~value.indexOf('/'))
+    if (value && !value.includes('/'))
         return '/' + value;
     
     return value;
diff --git a/server/validate.js b/server/validate.js
index e87ce5a5..498cd78e 100644
--- a/server/validate.js
+++ b/server/validate.js
@@ -47,7 +47,7 @@ module.exports.columns = (type) => {
         .map(addQuotes)
         .join(', ');
     
-    if (!~all.indexOf(type))
+    if (!all.includes(type))
         exit(`cloudcmd --columns: can be only one of: ${names}`);
 };