diff --git a/package/php/Config.ext b/package/php/Config.ext
index 5324e7958a..c044e45ad8 100644
--- a/package/php/Config.ext
+++ b/package/php/Config.ext
@@ -67,6 +67,7 @@ config BR2_PACKAGE_PHP_EXT_HASH
 
 config BR2_PACKAGE_PHP_EXT_MCRYPT
 	bool "mcrypt"
+	select BR2_PACKAGE_LIBMCRYPT
 	help
 	  mcrypt support