diff --git a/types/datadog-statsd-metrics-collector/datadog-statsd-metrics-collector-tests.ts b/types/datadog-statsd-metrics-collector/datadog-statsd-metrics-collector-tests.ts
index ef5691a57d..3f31b10189 100644
--- a/types/datadog-statsd-metrics-collector/datadog-statsd-metrics-collector-tests.ts
+++ b/types/datadog-statsd-metrics-collector/datadog-statsd-metrics-collector-tests.ts
@@ -5,6 +5,7 @@ const client = new datadog.StatsD('localhost');
 
 // constructors
 let collector = new Collector(client);
+collector = new Collector(null);
 collector = new Collector(client, 1000);
 
 // interface
diff --git a/types/datadog-statsd-metrics-collector/index.d.ts b/types/datadog-statsd-metrics-collector/index.d.ts
index 741c5a9f43..ebb18475ac 100644
--- a/types/datadog-statsd-metrics-collector/index.d.ts
+++ b/types/datadog-statsd-metrics-collector/index.d.ts
@@ -6,7 +6,7 @@
 import dogstatsd = require('node-dogstatsd');
 
 declare class Collector implements dogstatsd.StatsDClient {
-    constructor(client: dogstatsd.StatsDClient, delayMilliseconds?: number);
+    constructor(client: dogstatsd.StatsDClient | null, delayMilliseconds?: number);
 
     timing(stat: string, time: number, sample_rate?: number, tags?: string[]): void;