diff --git a/types/nano/index.d.ts b/types/nano/index.d.ts
index b7222b1064..a6d0956f9e 100644
--- a/types/nano/index.d.ts
+++ b/types/nano/index.d.ts
@@ -63,7 +63,7 @@ declare namespace nano {
       source: string | DocumentScope<D>,
       target: string | DocumentScope<D>,
       callback?: Callback<DatabaseReplicateResponse>
-    ): Request
+    ): Request;
     // http://docs.couchdb.org/en/latest/api/server/common.html#post--_replicate
     replicate<D>(
       source: string | DocumentScope<D>,
@@ -92,7 +92,7 @@ declare namespace nano {
     replicate<D>(
       target: string | DocumentScope<D>,
       callback?: Callback<DatabaseReplicateResponse>
-    ): Request
+    ): Request;
     // http://docs.couchdb.org/en/latest/api/server/common.html#post--_replicate
     replicate(
       target: string | DocumentScope<D>,
@@ -266,9 +266,9 @@ declare namespace nano {
     // http://docs.couchdb.org/en/latest/api/document/common.html#creating-multiple-attachments
     insert(doc: D, attachments: any[], callback?: Callback<DocumentInsertResponse>): Request;
     // http://docs.couchdb.org/en/latest/api/document/common.html#creating-multiple-attachments
-    insert(doc: D, attachments: any[], params: string | any, callback?: Callback<DocumentInsertResponse>): Request;
+    insert(doc: D, attachments: any[], params: any, callback?: Callback<DocumentInsertResponse>): Request;
     get(docname: string, callback?: Callback<any>): Request;
-    get(docname: string, params: string | any, callback?: Callback<any>): Request;
+    get(docname: string, params: any, callback?: Callback<any>): Request;
   }
 
   interface Attachment {
diff --git a/types/nano/nano-tests.ts b/types/nano/nano-tests.ts
index 522064f993..2184ed822f 100644
--- a/types/nano/nano-tests.ts
+++ b/types/nano/nano-tests.ts
@@ -66,8 +66,8 @@ db.replicate("a", "b", (error: any) => {});
 /*
  * Document Scope
  */
-interface SomeDocument{
-  name: string
+interface SomeDocument {
+  name: string;
 }
 
 const mydb: nano.DocumentScope<SomeDocument> = instance.use("mydb");