diff --git a/README.md b/README.md
index 400f630..500418a 100644
--- a/README.md
+++ b/README.md
@@ -321,17 +321,17 @@ await user.permissions().fetch()
 
 Syntax:
 
-`and (&&)` - administrator && moderator
+`and` - administrator,and,moderator
 
-`or (||)` - administrator || moderator
+`or` - administrator,or,moderator
 
-`not (!)` - administrator && !moderator
+`not` - administrator,and,not,moderator
 
 ```js
 // check roles
 Route
   .get('/users')
-  .middleware(['auth:jwt', 'is:(administrator || moderator) && !customer'])
+  .middleware(['auth:jwt', 'is:(administrator or moderator) and not customer'])
 
 // check permissions
 Route
diff --git a/src/Middlewares/Is.js b/src/Middlewares/Is.js
index e2a3671..8a659d1 100644
--- a/src/Middlewares/Is.js
+++ b/src/Middlewares/Is.js
@@ -12,8 +12,11 @@ class Is {
   async handle ({ auth }, next, ...args) {
     let expression = args[0]
     if (Array.isArray(expression)) {
-      expression = expression[0]
+      expression = expression.join(' ')
     }
+    expression = expression.replace(' or ', ' || ')
+    expression = expression.replace(' and ', ' && ')
+    expression = expression.replace(' not ', ' !')
     const is = await auth.user.is(expression)
     if (!is) {
       throw new ForbiddenException()