diff --git a/package/libcdio/Config.in b/package/libcdio/Config.in
index 555eb2915e..fdc001ec40 100644
--- a/package/libcdio/Config.in
+++ b/package/libcdio/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_LIBCDIO
 	bool "libcdio"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_LIBICONV if !BR2_ENABLE_LOCALE
 	help
 	  The GNU Compact Disc Input and Control library.