diff --git a/libs/ts-standard/src/filter.ts b/libs/ts-standard/src/filter.ts
index 09fb49a..1d07e45 100644
--- a/libs/ts-standard/src/filter.ts
+++ b/libs/ts-standard/src/filter.ts
@@ -28,6 +28,7 @@ export function isNonNullable<T>(value: Nullable<T>): value is NonNullable<T> {
  * Check if an object has `NonNullable` values for the given keys.
  *
  * @typeParam T - type of value to check
+ * @typeParam K - keys of `T` to check
  *
  * @param keys - to check values of
  * @returns - function to check a given value
diff --git a/libs/ts-standard/src/index.ts b/libs/ts-standard/src/index.ts
index cc6158e..c520e84 100644
--- a/libs/ts-standard/src/index.ts
+++ b/libs/ts-standard/src/index.ts
@@ -4,5 +4,5 @@
  * @module ts-standard
  */
 
-export { isNonNullable } from './filter';
+export { isNonNullable, isNonNullableKeys } from './filter';
 export type { NonNullableKeys, Nullable, Opt } from './type';