diff --git a/types/react-bootstrap/lib/NavDropdown.d.ts b/types/react-bootstrap/lib/NavDropdown.d.ts
index 6f274fb3fc..f7b9460341 100644
--- a/types/react-bootstrap/lib/NavDropdown.d.ts
+++ b/types/react-bootstrap/lib/NavDropdown.d.ts
@@ -10,7 +10,7 @@ declare namespace NavDropdown {
         title: React.ReactNode;
     }
 
-  export type NavDropdownProps = NavDropdownBaseProps & Omit<React.HTMLProps<NavDropdown>, 'title'>;
+    export type NavDropdownProps = NavDropdownBaseProps & Omit<React.HTMLProps<NavDropdown>, 'title'>;
 }
 declare class NavDropdown extends React.Component<NavDropdown.NavDropdownProps> { }
 export = NavDropdown;