diff --git a/types/elo-rank/index.d.ts b/types/elo-rank/index.d.ts
index c2a797cbcb..d3265cb15b 100644
--- a/types/elo-rank/index.d.ts
+++ b/types/elo-rank/index.d.ts
@@ -3,7 +3,7 @@
 // Definitions by: Antonio Pavlinovic <https://github.com/apavlinovic>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-export class EloRank {
+export default class EloRank {
 	constructor(kFactor?: number);
 	
 	setKFactor(kFactor: number): void;
diff --git a/types/elo-rank/tsconfig.json b/types/elo-rank/tsconfig.json
index 7ec166bf13..2ebd08f352 100644
--- a/types/elo-rank/tsconfig.json
+++ b/types/elo-rank/tsconfig.json
@@ -7,6 +7,7 @@
         "noImplicitAny": true,
         "noImplicitThis": true,
         "strictNullChecks": true,
+        "strictFunctionTypes": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"