diff --git a/graham_scan/graham_scan.d.ts b/graham_scan/graham_scan.d.ts
index 617df2e7e..dbc30517b 100644
--- a/graham_scan/graham_scan.d.ts
+++ b/graham_scan/graham_scan.d.ts
@@ -6,3 +6,7 @@ declare class ConvexHullGrahamScan {
     addPoint(x: number, y: number): void;
     getHull(): {x: number, y: number}[];
 }
+
+declare module 'graham_scan' {
+    export = ConvexHullGrahamScan;
+}