diff --git a/package/kismet/Config.in b/package/kismet/Config.in
index 8de29beea4..a0e7c6792d 100644
--- a/package/kismet/Config.in
+++ b/package/kismet/Config.in
@@ -5,6 +5,7 @@ config BR2_PACKAGE_KISMET
 	bool "kismet"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libnl
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_NCURSES
 	select BR2_PACKAGE_NCURSES_TARGET_PANEL
 	select BR2_PACKAGE_LIBPCAP