diff --git a/types/react-native-custom-tabs/index.d.ts b/types/react-native-custom-tabs/index.d.ts
index 5e0754c546..42fd1cdf78 100644
--- a/types/react-native-custom-tabs/index.d.ts
+++ b/types/react-native-custom-tabs/index.d.ts
@@ -19,6 +19,6 @@ export interface CustomTabsOptions {
   headers?: any;
 }
 
-declare namespace CustomTabs {
+export namespace CustomTabs {
     function openURL(url: string, options?: CustomTabsOptions): Promise<boolean>;
 }