diff --git a/package/rtorrent/Config.in b/package/rtorrent/Config.in
index 7b21b5af10..218cc6ded1 100644
--- a/package/rtorrent/Config.in
+++ b/package/rtorrent/Config.in
@@ -3,6 +3,7 @@ config BR2_PACKAGE_RTORRENT
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_USE_WCHAR
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_LIBCURL
 	select BR2_PACKAGE_LIBSIGC
 	select BR2_PACKAGE_LIBTORRENT