diff --git a/README.md b/README.md
index 0c1afab9..aaf2290f 100644
--- a/README.md
+++ b/README.md
@@ -1005,7 +1005,7 @@
 
       anonymous(); // => TypeError anonymous is not a function
 
-      let anonymous = function() {
+      var anonymous = function() {
         console.log('anonymous function expression');
       };
     }
@@ -1021,7 +1021,7 @@
 
       superPower(); // => ReferenceError superPower is not defined
 
-      let named = function superPower() {
+      var named = function superPower() {
         console.log('Flying');
       };
     }
@@ -1033,7 +1033,7 @@
 
       named(); // => TypeError named is not a function
 
-      let named = function named() {
+      var named = function named() {
         console.log('named');
       }
     }