diff --git a/src/components/fileviewer.js b/src/components/fileviewer.js
index f9afe45b..4b3f7b4c 100644
--- a/src/components/fileviewer.js
+++ b/src/components/fileviewer.js
@@ -33,29 +33,37 @@ export default class FileViewerContainer extends Component {
       });
     });
 
-    FetchAPI.getFileRevisionCoverage(revision, path,
-      (data) => {
-        console.log(data);
-        this.setState(() => ({ coverage: data }));
-        // TODO remove these log lines
-        console.log(this.state.coverage.data[0][0].source.file.covered);
-        console.log(this.state.coverage.data[0][0].source.file.uncovered);
-        console.log(this.state.coverage.data[0][0].source.file.percentage_covered);
-      }
-    )
+    FetchAPI.getFileRevisionCoverage(revision, path)
+      .then(response => {
+        if (response.status !== 200) {
+          console.log('Error status code' + response.status);
+          return;
+        }
+        response.json().then(data => {
+          this.setState({ coverage: data });
+          // TODO remove these log lines
+          console.log(data);
+          console.log(this.state.coverage.data[0][0].source.file.covered);
+          console.log(this.state.coverage.data[0][0].source.file.uncovered);
+          console.log(this.state.coverage.data[0][0].source.file.percentage_covered);
+        });
+      })
+      .catch(err => {
+        console.log('Fetch error', err);
+      })
   };
 
   render() {
     const { revision, path } = this.props;
     return (
       <div>
-        <FileViewerMeta 
-          revision={revision} 
-          path={path} 
+        <FileViewerMeta
+          revision={revision}
+          path={path}
           appError={this.state.appError}
         />
-        <FileViewer 
-          parsedFile={this.state.parsedFile} 
+        <FileViewer
+          parsedFile={this.state.parsedFile}
           coverage={this.state.coverage}
         />
       </div>
@@ -65,13 +73,13 @@ export default class FileViewerContainer extends Component {
 
 /* This component renders each line of the file with its line number */
 const FileViewer = ({ parsedFile, coverage }) => {
-  return ( 
+  return (
     <div>
       <table>
         <tbody>
-          { 
+          {
             parsedFile.map((line, lineNumber) => (
-              <Line 
+              <Line
                 key={lineNumber}
                 lineNumber={lineNumber+1}
                 lineText={line}
diff --git a/src/fetch_data.js b/src/fetch_data.js
index f89dcfb5..41054d1b 100644
--- a/src/fetch_data.js
+++ b/src/fetch_data.js
@@ -1,9 +1,8 @@
 import * as Query from './query';
-const https = require('https');
 
 export const hgHost = 'https://hg.mozilla.org';
 export const ccovBackend = 'https://uplift.shipit.staging.mozilla-releng.net';
-export const activeData = 'activedata.allizom.org';
+export const activeData = 'https://activedata.allizom.org';
 
 const plainHeaders = {
   Accept: 'text/plain',
@@ -28,41 +27,6 @@ export const getChangesetCoverageSummary = changeset =>
 export const getRawFile = (revision, path) =>
   fetch(`${hgHost}/integration/mozilla-inbound/raw-file/${revision}/${path}`, { plainHeaders });
 
-// Taken from https://github.com/mozilla/moz-coco/blob/master/src/client/Client.js
-// On October 23, 2017
-// Under the MPL License
-export const getFileRevisionCoverage = (revision, path, callback) => {
-  const body = Query.testCoverage(revision, path);
-  const jsonbody = JSON.stringify(body);
-  const options = {
-    hostname: `${activeData}`,
-    port: 443,
-    path: '/query',
-    method: 'POST',
-    headers: {
-      'Content-Type': 'text/plain',
-      'Content-Length': Buffer.byteLength(jsonbody)
-    }
-  }
-  console.log("Query sent: " + jsonbody);
-  const respchunks = [];
-  const p = new Promise((resolve, reject) => {
-    const req = https.request(options, (res) => {
-      res.setEncoding('utf8');
-      res.on('data', (chunk) => {
-        respchunks.push(new Buffer(chunk));
-      });
-      res.on('end', (chunk) => {
-        resolve(Buffer.concat(respchunks).toString('utf8'));
-      });
-      res.on('error', (e) => {
-        reject(e);
-      });
-    });
-    req.write(jsonbody);
-    req.end();
-  });
-  p.then((body) => {
-    callback(JSON.parse(body));
-  }).catch((err) => console.log(`Exception in fetch_data.js: ${err}`));
-}
\ No newline at end of file
+// get coverage from ActiveData for a particular source file
+export const getFileRevisionCoverage = (revision, path) =>
+  fetch(`${activeData}/query`, { jsonHeaders, method:"POST", body: JSON.stringify(Query.testCoverage(revision, path)) });