diff --git a/typescript/raven-tests.ts b/typescript/raven-tests.ts
index 9268e5200727..6238428f8320 100644
--- a/typescript/raven-tests.ts
+++ b/typescript/raven-tests.ts
@@ -29,7 +29,8 @@ var options: Raven.RavenOptions = {
     },
     breadcrumbCallback: function (data) {
         return data
-    }
+    },
+    allowDuplicates: true
 };
 
 Raven.config('https://public@sentry.io/1', options).install();
diff --git a/typescript/raven.d.ts b/typescript/raven.d.ts
index 222a873a5186..a45cdc55dc57 100644
--- a/typescript/raven.d.ts
+++ b/typescript/raven.d.ts
@@ -87,6 +87,11 @@ declare module Raven {
          * A sampling rate to apply to events. A value of 0.0 will send no events, and a value of 1.0 will send all events (default).
          */
         sampleRate?: number;
+
+        /**
+         * Should raven send duplicate errors. A value of false will not send duplicate errors (default).
+         */
+        allowDuplicates?: boolean;
     }
 
     interface RavenInstrumentationOptions {