diff --git a/package/odhcp6c/Config.in b/package/odhcp6c/Config.in
index 92de0e582d..9e5f3ef732 100644
--- a/package/odhcp6c/Config.in
+++ b/package/odhcp6c/Config.in
@@ -1,9 +1,11 @@
 comment "odhcp6c needs a toolchain w/ IPv6"
 	depends on !BR2_INET_IPV6
+	depends on BR2_USE_MMU
 
 config BR2_PACKAGE_ODHCP6C
 	bool "odhcp6c"
 	depends on BR2_INET_IPV6
+	depends on BR2_USE_MMU # fork()
 	help
 	  odhcp6c is a minimal DHCPv6 and RA-client for use in embedded Linux
 	  systems, especially routers.