diff --git a/modules/benchmarks/src/largetable/util.ts b/modules/benchmarks/src/largetable/util.ts
index a007224bf1..3c5adfe767 100644
--- a/modules/benchmarks/src/largetable/util.ts
+++ b/modules/benchmarks/src/largetable/util.ts
@@ -13,8 +13,8 @@ export class TableCell {
 }
 
 let tableCreateCount: number;
-export let maxRow: number;
-export let maxCol: number;
+let maxRow: number;
+let maxCol: number;
 let numberData: TableCell[][];
 let charData: TableCell[][];
 
diff --git a/modules/benchmarks/src/tree/ng2_static/tree.ts b/modules/benchmarks/src/tree/ng2_static/tree.ts
index 00d10e74a2..2ca2adaf1d 100644
--- a/modules/benchmarks/src/tree/ng2_static/tree.ts
+++ b/modules/benchmarks/src/tree/ng2_static/tree.ts
@@ -9,7 +9,7 @@
 import {Component, Input, NgModule} from '@angular/core';
 import {BrowserModule, DomSanitizer, SafeStyle} from '@angular/platform-browser';
 
-import {TreeNode, emptyTree, maxDepth} from '../util';
+import {TreeNode, emptyTree, getMaxDepth} from '../util';
 
 let trustedEmptyColor: SafeStyle;
 let trustedGreyColor: SafeStyle;
@@ -40,8 +40,8 @@ export class RootTreeComponent {
 
 function createModule(): any {
   const components: any[] = [RootTreeComponent];
-  for (let i = 0; i <= maxDepth; i++) {
-    components.push(createTreeComponent(i, i === maxDepth));
+  for (let i = 0; i <= getMaxDepth(); i++) {
+    components.push(createTreeComponent(i, i === getMaxDepth()));
   }
 
   @NgModule({imports: [BrowserModule], bootstrap: [RootTreeComponent], declarations: [components]})
diff --git a/modules/benchmarks/src/tree/util.ts b/modules/benchmarks/src/tree/util.ts
index 90d475ad05..4c9dc19789 100644
--- a/modules/benchmarks/src/tree/util.ts
+++ b/modules/benchmarks/src/tree/util.ts
@@ -25,10 +25,14 @@ export class TreeNode {
 }
 
 let treeCreateCount: number;
-export let maxDepth: number;
+let maxDepth: number;
 let numberData: TreeNode;
 let charData: TreeNode;
 
+export function getMaxDepth() {
+  return maxDepth;
+}
+
 init();
 
 function init() {
@@ -77,4 +81,4 @@ export function newArray<T>(size: number, value?: T): T[] {
     list.push(value !);
   }
   return list;
-}
\ No newline at end of file
+}