diff --git a/types/datadog-metrics/datadog-metrics-tests.ts b/types/datadog-metrics/datadog-metrics-tests.ts
index 44ab2dc3a1..ffbeccda89 100644
--- a/types/datadog-metrics/datadog-metrics-tests.ts
+++ b/types/datadog-metrics/datadog-metrics-tests.ts
@@ -1,12 +1,12 @@
 import metrics = require('datadog-metrics');
 metrics.init({ host: 'myhost', prefix: 'myapp.' });
 metrics.gauge('mygauge', 42);
-metrics.gauge("mykey", 11, ["a", "b", "c"], Date.now());
+metrics.gauge('mykey', 11, ['a', 'b', 'c'], Date.now());
 metrics.increment('test.requests_served');
 metrics.increment('test.awesomeness_factor', 10);
 metrics.increment('test.service_time', 0.248);
-metrics.histogram("mykey", 11, ["a", "b", "c"], Date.now());
-metrics.histogram("mykey", 11, ["a", "b", "c"], Date.now());
+metrics.histogram('mykey', 11, ['a', 'b', 'c'], Date.now());
+metrics.histogram('mykey', 11, ['a', 'b', 'c'], Date.now());
 metrics.flush();
 metrics.flush(() => {});
 metrics.flush(() => {}, err => {});
@@ -19,12 +19,12 @@ const metricsLogger = new metrics.BufferedMetricsLogger({
     defaultTags: ['env:staging', 'region:us-east-1']
 });
 metricsLogger.gauge('mygauge', 42);
-metricsLogger.gauge("mykey", 11, ["a", "b", "c"], Date.now());
+metricsLogger.gauge('mykey', 11, ['a', 'b', 'c'], Date.now());
 metricsLogger.increment('test.requests_served');
 metricsLogger.increment('test.awesomeness_factor', 10);
-metricsLogger.increment("mykey", 11, ["a", "b", "c"], Date.now());
+metricsLogger.increment('mykey', 11, ['a', 'b', 'c'], Date.now());
 metricsLogger.histogram('test.service_time', 0.248);
-metricsLogger.histogram("mykey", 11, ["a", "b", "c"], Date.now());
+metricsLogger.histogram('mykey', 11, ['a', 'b', 'c'], Date.now());
 metricsLogger.flush();
 metricsLogger.flush(() => {});
 metricsLogger.flush(() => {}, err => {});