diff --git a/examples/features.js b/examples/features.js
index 6838e8ed..7e4d277a 100644
--- a/examples/features.js
+++ b/examples/features.js
@@ -21,7 +21,7 @@ var browser = new Browser();
 browser.newPage().then(async page => {
     var modernizrPath = path.join('..', 'third_party', 'phantomjs', 'examples', 'modernizr.js');
     await page.injectFile(modernizrPath);
-    page.on('ConsoleMessage', console.log);
+    page.on('consolemessage', console.log);
     await page.evaluate(detectFeatures);
     browser.close();
 });
diff --git a/examples/pagecallback.js b/examples/pagecallback.js
index f7eb0b9b..2ffdb06a 100644
--- a/examples/pagecallback.js
+++ b/examples/pagecallback.js
@@ -18,7 +18,7 @@ var Browser = require('../lib/Browser');
 var browser = new Browser();
 
 browser.newPage().then(async page => {
-    page.on('ConsoleMessage', console.log);
+    page.on('consolemessage', console.log);
     await page.setInPageCallback('callPhantom', msg => {
         console.log("Received by the 'phantom' main context: "+msg);
         return "Hello there, I'm coming to you from the 'phantom' context instead";
diff --git a/lib/Page.js b/lib/Page.js
index 581338b4..45497e80 100644
--- a/lib/Page.js
+++ b/lib/Page.js
@@ -60,7 +60,7 @@ class Page extends EventEmitter {
         client.on('Network.responseReceived', event => this.emit(Page.Events.ResponseReceived, event.response));
         client.on('Network.loadingFailed', event => this.emit(Page.Events.ResourceLoadingFailed, event));
         client.on('Runtime.consoleAPICalled', event => this._onConsoleAPI(event));
-        client.on('Page.javascriptDialogOpening', dialog => this.emit(Page.Events.DialogOpened, dialog));
+        client.on('Page.javascriptDialogOpening', dialog => this.emit(Page.Events.Dialog, dialog));
         client.on('Runtime.exceptionThrown', exception => this._handleException(exception.exceptionDetails));
     }
 
@@ -199,7 +199,7 @@ class Page extends EventEmitter {
             stack = exceptionDetails.stackTrace.callFrames.map(cf => cf.url);
         }
         var stackTrace = exceptionDetails.stackTrace;
-        this.emit(Page.Events.ExceptionThrown, exceptionDetails.exception.description, stack);
+        this.emit(Page.Events.Exception, exceptionDetails.exception.description, stack);
     }
 
     _onConsoleAPI(event) {
@@ -416,11 +416,11 @@ Page.ScreenshotTypes = {
 };
 
 Page.Events = {
-    ConsoleMessage: 'ConsoleMessage',
-    DialogOpened: 'DialogOpened',
-    ExceptionThrown: 'ExceptionThrown',
-    ResourceLoadingFailed: 'ResourceLoadingFailed',
-    ResponseReceived: 'ResponseReceived',
+    ConsoleMessage: 'consolemessage',
+    Dialog: 'dialog',
+    Exception: 'exception',
+    ResourceLoadingFailed: 'resourceloadingfailed',
+    ResponseReceived: 'responsereceived',
 };
 
 module.exports = Page;
diff --git a/phantomjs/WebPage.js b/phantomjs/WebPage.js
index e968d753..e4d7af40 100644
--- a/phantomjs/WebPage.js
+++ b/phantomjs/WebPage.js
@@ -64,8 +64,8 @@ class WebPage {
         this._pageEvents.on(PageEvents.ResponseReceived, response => this._onResponseReceived(response));
         this._pageEvents.on(PageEvents.ResourceLoadingFailed, event => (this.onResourceError || noop).call(null, event));
         this._pageEvents.on(PageEvents.ConsoleMessage, msg => (this.onConsoleMessage || noop).call(null, msg));
-        this._pageEvents.on(PageEvents.DialogOpened, dialog => this._onDialog(dialog));
-        this._pageEvents.on(PageEvents.ExceptionThrown, (exception, stack) => (this._onError || noop).call(null, exception, stack));
+        this._pageEvents.on(PageEvents.Dialog, dialog => this._onDialog(dialog));
+        this._pageEvents.on(PageEvents.Exception, (exception, stack) => (this._onError || noop).call(null, exception, stack));
     }
 
     _onResponseReceived(response) {
diff --git a/test/test.js b/test/test.js
index 7031c738..ef4cbf8d 100644
--- a/test/test.js
+++ b/test/test.js
@@ -35,7 +35,7 @@ describe('Puppeteer', function() {
 
     it('Page Events: ConsoleMessage', SX(async function() {
         var msgs = [];
-        page.on('ConsoleMessage', msg => msgs.push(msg));
+        page.on('consolemessage', msg => msgs.push(msg));
         await page.evaluate(() => console.log('Message!'));
         expect(msgs).toEqual(['Message!']);
     }));