diff --git a/types/acorn/acorn-tests.ts b/types/acorn/acorn-tests.ts
index 9e8c3d42b9..7574df2481 100644
--- a/types/acorn/acorn-tests.ts
+++ b/types/acorn/acorn-tests.ts
@@ -1,13 +1,13 @@
 import acorn = require('acorn');
 import * as ESTree from 'estree';
 
-declare var token: acorn.Token;
-declare var tokens: acorn.Token[];
-declare var comment: acorn.Comment;
-declare var comments: acorn.Comment[];
-declare var program: ESTree.Program;
-var any: any;
-var string: string;
+declare let token: acorn.Token;
+declare let tokens: acorn.Token[];
+declare let comment: acorn.Comment;
+declare let comments: acorn.Comment[];
+declare let program: ESTree.Program;
+let any: any;
+let string: string;
 
 // acorn
 string = acorn.version;
diff --git a/types/acorn/tslint.json b/types/acorn/tslint.json
index e1b07b5581..4c1016fadc 100644
--- a/types/acorn/tslint.json
+++ b/types/acorn/tslint.json
@@ -7,7 +7,6 @@
         "interface-name": false,
         "no-empty-interface": false,
         "no-reference-import": false,
-        "no-unnecessary-class": false,
-        "no-var-keyword": false
+        "no-unnecessary-class": false
     }
 }