diff --git a/package/dhcp/Config.in b/package/dhcp/Config.in
index 224583972..38cf00796 100644
--- a/package/dhcp/Config.in
+++ b/package/dhcp/Config.in
@@ -1,5 +1,7 @@
 config BR2_PACKAGE_DHCP
 	bool "isc dhcp"
+	# fork()
+	depends on BR2_USE_MMU
 	help
 	  DHCP relay agent from the ISC DHCP distribution.