diff --git a/index.d.ts b/index.d.ts
index 1a4bf93..e65f40c 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -35,7 +35,7 @@ declare namespace AwesomePhonenumber
 		getNumber( type?: PhoneNumberFormat ): string;
 		getNumberFrom( regionCode: string ): string;
 		getRegionCode( ): string;
-		getCountryCode( ): string;
+		getCountryCode( ): number;
 		toJSON( ): any;
 
 		static getCountryCodeForRegionCode( regionCode: string ): number;