diff --git a/package/mrouted/Config.in b/package/mrouted/Config.in
index 1503cc6ab9..bf4614d4af 100644
--- a/package/mrouted/Config.in
+++ b/package/mrouted/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_MROUTED
 	bool "mrouted"
+	depends on BR2_USE_MMU # fork()
 	help
 	  An implementation of the DVMRP multicast routing protocol.