diff --git a/modules/angular2/src/platform/browser/browser_adapter.dart b/modules/angular2/src/platform/browser/browser_adapter.dart
index 551a7dc7be..d867f11d4a 100644
--- a/modules/angular2/src/platform/browser/browser_adapter.dart
+++ b/modules/angular2/src/platform/browser/browser_adapter.dart
@@ -321,16 +321,16 @@ class BrowserDomAdapter extends GenericBrowserDomAdapter {
   List<Node> getElementsByTagName(Element element, String name) =>
       element.querySelectorAll(name);
   List<String> classList(Element element) => element.classes.toList();
-  void addClass(Element element, String classname) {
-    element.classes.add(classname);
+  void addClass(Element element, String className) {
+    element.classes.add(className);
   }
 
-  void removeClass(Element element, String classname) {
-    element.classes.remove(classname);
+  void removeClass(Element element, String className) {
+    element.classes.remove(className);
   }
 
-  bool hasClass(Element element, String classname) =>
-      element.classes.contains(classname);
+  bool hasClass(Element element, String className) =>
+      element.classes.contains(className);
 
   void setStyle(Element element, String styleName, String styleValue) {
     element.style.setProperty(styleName, styleValue);
diff --git a/modules/angular2/src/platform/browser/browser_adapter.ts b/modules/angular2/src/platform/browser/browser_adapter.ts
index 5aa9403d22..986c90e2ec 100644
--- a/modules/angular2/src/platform/browser/browser_adapter.ts
+++ b/modules/angular2/src/platform/browser/browser_adapter.ts
@@ -199,11 +199,11 @@ export class BrowserDomAdapter extends GenericBrowserDomAdapter {
     return element.getElementsByTagName(name);
   }
   classList(element): any[] { return <any[]>Array.prototype.slice.call(element.classList, 0); }
-  addClass(element, classname: string) { element.classList.add(classname); }
-  removeClass(element, classname: string) { element.classList.remove(classname); }
-  hasClass(element, classname: string): boolean { return element.classList.contains(classname); }
-  setStyle(element, stylename: string, stylevalue: string) {
-    element.style[stylename] = stylevalue;
+  addClass(element, className: string) { element.classList.add(className); }
+  removeClass(element, className: string) { element.classList.remove(className); }
+  hasClass(element, className: string): boolean { return element.classList.contains(className); }
+  setStyle(element, styleName: string, styleValue: string) {
+    element.style[styleName] = styleValue;
   }
   removeStyle(element, stylename: string) { element.style[stylename] = null; }
   getStyle(element, stylename: string): string { return element.style[stylename]; }
diff --git a/modules/angular2/src/platform/dom/dom_adapter.ts b/modules/angular2/src/platform/dom/dom_adapter.ts
index 8577e31632..50049a52a0 100644
--- a/modules/angular2/src/platform/dom/dom_adapter.ts
+++ b/modules/angular2/src/platform/dom/dom_adapter.ts
@@ -83,9 +83,9 @@ export abstract class DomAdapter {
   abstract getElementsByClassName(element, name: string): HTMLElement[];
   abstract getElementsByTagName(element, name: string): HTMLElement[];
   abstract classList(element): any[];
-  abstract addClass(element, classname: string);
-  abstract removeClass(element, classname: string);
-  abstract hasClass(element, classname: string): boolean;
+  abstract addClass(element, className: string);
+  abstract removeClass(element, className: string);
+  abstract hasClass(element, className: string): boolean;
   abstract setStyle(element, styleName: string, styleValue: string);
   abstract removeStyle(element, styleName: string);
   abstract getStyle(element, styleName: string): string;
diff --git a/modules/angular2/src/platform/server/abstract_html_adapter.dart b/modules/angular2/src/platform/server/abstract_html_adapter.dart
index 1481546fdf..7b136601a6 100644
--- a/modules/angular2/src/platform/server/abstract_html_adapter.dart
+++ b/modules/angular2/src/platform/server/abstract_html_adapter.dart
@@ -253,15 +253,15 @@ abstract class AbstractHtml5LibAdapter implements DomAdapter {
 
   List classList(element) => element.classes.toList();
 
-  addClass(element, String classname) {
-    element.classes.add(classname);
+  addClass(element, String className) {
+    element.classes.add(className);
   }
 
-  removeClass(element, String classname) {
+  removeClass(element, String className) {
     throw 'not implemented';
   }
 
-  hasClass(element, String classname) => element.classes.contains(classname);
+  hasClass(element, String className) => element.classes.contains(className);
 
   setStyle(element, String styleName, String styleValue) {
     throw 'not implemented';
diff --git a/modules/angular2/src/platform/server/parse5_adapter.ts b/modules/angular2/src/platform/server/parse5_adapter.ts
index bf5886e549..9621e04f82 100644
--- a/modules/angular2/src/platform/server/parse5_adapter.ts
+++ b/modules/angular2/src/platform/server/parse5_adapter.ts
@@ -352,24 +352,24 @@ export class Parse5DomAdapter extends DomAdapter {
     }
     return classAttrValue ? classAttrValue.trim().split(/\s+/g) : [];
   }
-  addClass(element, classname: string) {
+  addClass(element, className: string) {
     var classList = this.classList(element);
-    var index = classList.indexOf(classname);
+    var index = classList.indexOf(className);
     if (index == -1) {
-      classList.push(classname);
+      classList.push(className);
       element.attribs["class"] = element.className = classList.join(" ");
     }
   }
-  removeClass(element, classname: string) {
+  removeClass(element, className: string) {
     var classList = this.classList(element);
-    var index = classList.indexOf(classname);
+    var index = classList.indexOf(className);
     if (index > -1) {
       classList.splice(index, 1);
       element.attribs["class"] = element.className = classList.join(" ");
     }
   }
-  hasClass(element, classname: string): boolean {
-    return ListWrapper.contains(this.classList(element), classname);
+  hasClass(element, className: string): boolean {
+    return ListWrapper.contains(this.classList(element), className);
   }
   hasStyle(element, styleName: string, styleValue: string = null): boolean {
     var value = this.getStyle(element, styleName) || '';