diff --git a/package/x11r7/xapp_xmh/Config.in b/package/x11r7/xapp_xmh/Config.in
index 1ef65c762f..4e86d0f426 100644
--- a/package/x11r7/xapp_xmh/Config.in
+++ b/package/x11r7/xapp_xmh/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_XAPP_XMH
 	bool "xmh"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_XLIB_LIBXAW
 	select BR2_PACKAGE_XDATA_XBITMAPS
 	help