diff --git a/types/index.d.ts b/types/index.d.ts
index b69b3f3..0c73229 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -5,7 +5,7 @@
  *
  * @see https://github.com/Microsoft/TypeScript/issues/12215#issuecomment-377567046
  */
-export type Omit<T, K extends keyof any> = Pick<T, Exclude<keyof T, K>>;
+export type Omit<T, K extends keyof any> = T extends any ? Pick<T, Exclude<keyof T, K>> : never;
 
 /**
  * Like `T & U`, but where there are overlapping properties using the