diff --git a/knockout.validation/knockout.validation.d.ts b/knockout.validation/knockout.validation.d.ts
index 2e00c5223..e65ec6743 100644
--- a/knockout.validation/knockout.validation.d.ts
+++ b/knockout.validation/knockout.validation.d.ts
@@ -138,7 +138,7 @@ interface KnockoutStatic {
     applyBindingsWithValidation(viewModel: any, rootNode?: any, options?: KnockoutValidationConfiguration): void;
 }
 
-interface KnockoutSubscribableFunctions {
+interface KnockoutSubscribableFunctions<T> {
     isValid: KnockoutComputed<boolean>;
     isValidating: KnockoutObservable<boolean>;
     rules: KnockoutObservableArray<KnockoutValidationRule>;