diff --git a/package/easyframes/Config.in b/package/easyframes/Config.in
index b2c45496b4..b73afe0587 100644
--- a/package/easyframes/Config.in
+++ b/package/easyframes/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_EASYFRAMES
 	bool "easyframes"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_LIBPCAP
 	help
 	  This is a small and simple command-line tool for network