diff --git a/package/acpid/Config.in b/package/acpid/Config.in
index b74e9d2262..0c8ecf2473 100644
--- a/package/acpid/Config.in
+++ b/package/acpid/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_ACPID
 	bool "acpid"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Advanced Configuration and Power Interface event daemon.