diff --git a/package/torsmo/Config.in b/package/torsmo/Config.in
index 7d309da04a..a3943bda8b 100644
--- a/package/torsmo/Config.in
+++ b/package/torsmo/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_TORSMO
 	bool "torsmo"
 	depends on BR2_PACKAGE_XORG7
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_XLIB_LIBX11
 	select BR2_PACKAGE_XLIB_LIBXEXT
 	help