diff --git a/types/react-native-custom-tabs/index.d.ts b/types/react-native-custom-tabs/index.d.ts
index ed74ff4303..5e0754c546 100644
--- a/types/react-native-custom-tabs/index.d.ts
+++ b/types/react-native-custom-tabs/index.d.ts
@@ -19,4 +19,6 @@ export interface CustomTabsOptions {
   headers?: any;
 }
 
-export function openURL(url: string, options?: CustomTabsOptions): Promise<boolean>;
+declare namespace CustomTabs {
+    function openURL(url: string, options?: CustomTabsOptions): Promise<boolean>;
+}