diff --git a/test/compression.js b/test/compression.js
index e88befb..b6166eb 100644
--- a/test/compression.js
+++ b/test/compression.js
@@ -323,9 +323,10 @@ describe('compression()', function () {
       })
       server.on('listening', function () {
         var client = createHttp2Client(server.address().port)
-        var request = client.request({
-          [http2.constants.HTTP2_HEADER_ACCEPT_ENCODING]: 'gzip'
-        })
+        // using ES5 as Node.js <=4.0.0 does not have Computed Property Names
+        var reqHeaders = {}
+        reqHeaders[http2.constants.HTTP2_HEADER_ACCEPT_ENCODING] = 'gzip'
+        var request = client.request(reqHeaders)
         request.on('response', function (headers) {
           assert.strictEqual(headers[http2.constants.HTTP2_HEADER_STATUS], 200)
           assert.strictEqual(headers[http2.constants.HTTP2_HEADER_CONTENT_TYPE], 'text/plain')