diff --git a/types/minio/index.d.ts b/types/minio/index.d.ts
index 94d28cdd5a..2dda500396 100644
--- a/types/minio/index.d.ts
+++ b/types/minio/index.d.ts
@@ -84,8 +84,8 @@ export class Client {
     listBuckets(callback: ResultCallback<BucketItemFromList[]>): void;
     listBuckets(): Promise<BucketItemFromList>;
 
-    bucketExists(bucketName: string, callback: NoResultCallback): void;
-    bucketExists(bucketName: string): Promise<void>;
+    bucketExists(bucketName: string, callback: ResultCallback<boolean>): void;
+    bucketExists(bucketName: string): Promise<boolean>;
 
     removeBucket(bucketName: string, callback: NoResultCallback): void;
     removeBucket(bucketName: string): Promise<void>;
diff --git a/types/minio/minio-tests.ts b/types/minio/minio-tests.ts
index 9307e68b20..05f8283d32 100644
--- a/types/minio/minio-tests.ts
+++ b/types/minio/minio-tests.ts
@@ -16,7 +16,7 @@ minio.makeBucket('testBucket', 'region-not-from-list');
 minio.listBuckets((error: Error|null, bucketList: Minio.BucketItemFromList[]) => { console.log(error, bucketList); });
 minio.listBuckets();
 
-minio.bucketExists('testBucket', (error: Error|null) => { console.log(error); });
+minio.bucketExists('testBucket', (error: Error|null, exists: boolean) => { console.log(error, exists); });
 minio.bucketExists('testBucket');
 
 minio.removeBucket('testBucket', (error: Error|null) => { console.log(error); });