diff --git a/moment-duration-format/moment-duration-format.d.ts b/moment-duration-format/moment-duration-format.d.ts
new file mode 100644
index 0000000000..e3c1f04666
--- /dev/null
+++ b/moment-duration-format/moment-duration-format.d.ts
@@ -0,0 +1,11 @@
+// Type definitions for moment-duration-format v1.3.0
+// Project: https://github.com/jsmreese/moment-duration-format
+// Definitions by: Swint De Coninck <https://github.com/SwintDC>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+
+declare namespace moment {
+    interface Duration {
+        format(template: string, precision?: string, settings?: any): string;
+    }
+}
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