diff --git a/package/pptp-linux/Config.in b/package/pptp-linux/Config.in
index 165f79bdc2..e03a906efd 100644
--- a/package/pptp-linux/Config.in
+++ b/package/pptp-linux/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_PPTP_LINUX
 	bool "pptp-linux"
+	depends on BR2_USE_MMU # fork()
 	help
 	  An implementation of the Point-to-point protocol client.