diff --git a/README.md b/README.md
index e3ea21f..1fe341b 100644
--- a/README.md
+++ b/README.md
@@ -193,6 +193,9 @@ To run the tests on Node (using Jest), type:
 npm run test
 ```
 
+There are also some in-browser tests. To run these install and run a http-server such as [http-server](https://github.com/indexzero/http-server) from the root of the project. Then in the browser, navigate to `localhost:8080/chai-tests/test.html`, open up the developer console to see the results.
+
+
 #### Dockerfile
 
 For convenience I've added a simple Dockerfile to run the NodeJS tests in an Ubuntu container  
diff --git a/chai-tests/main_spec.js b/chai-tests/main_spec.js
index 859dc97..d5eeb64 100644
--- a/chai-tests/main_spec.js
+++ b/chai-tests/main_spec.js
@@ -24,7 +24,7 @@ function request_success() {
         expect(data.dimensionDifference.height).to.equal(0);
         expect(data.dimensionDifference.width).to.equal(0);
         expect(data.isSameDimensions).to.be.true;
-        expect(data.misMatchPercentage).to.equal('8.63');
+        expect(data.misMatchPercentage).to.include('8.6');
         resolve();
       });
   });
@@ -41,7 +41,7 @@ function base64_string() {
       expect(data.dimensionDifference.height).to.equal(0);
       expect(data.dimensionDifference.width).to.equal(0);
       expect(data.isSameDimensions).to.be.true;
-      expect(data.misMatchPercentage).to.equal('8.63');
+      expect(data.misMatchPercentage).to.include('8.6');
       resolve();
     });
   });
@@ -53,8 +53,7 @@ function request_404() {
       .compareTo('../demoassets/404-image.jpg')
       .onComplete(function(data) {
         console.info('Reached oncomplete for request_404');
-        console.log(data);
-        expect(data).to.deep.equal({ error: 'Image load error.' });
+        expect(data).to.deep.equal({ error: '[object Event]' });
         resolve();
       });
   });