diff --git a/types/final-form-focus/index.d.ts b/types/final-form-focus/index.d.ts
index ad95827d54..2d9452d0a7 100644
--- a/types/final-form-focus/index.d.ts
+++ b/types/final-form-focus/index.d.ts
@@ -15,9 +15,11 @@ export type GetInputs = () => FocusableInput[];
 
 export type FindInput = (inputs: FocusableInput[], errors: object) => FocusableInput | undefined;
 
-export default function createDecorator(
+// tslint:disable:no-unnecessary-generics
+export default function createDecorator<FormValues = object>(
   getInputs?: GetInputs,
   findInput?: FindInput,
-): Decorator;
+): Decorator<FormValues>;
+// tslint:enable:no-unnecessary-generics
 
 export function getFormInputs(formName: string): GetInputs;
diff --git a/types/final-form-focus/tslint.json b/types/final-form-focus/tslint.json
index 3db14f85ea..f93cf8562a 100644
--- a/types/final-form-focus/tslint.json
+++ b/types/final-form-focus/tslint.json
@@ -1 +1,3 @@
-{ "extends": "dtslint/dt.json" }
+{
+    "extends": "dtslint/dt.json"
+}