diff --git a/package/ramsmp/Config.in b/package/ramsmp/Config.in
index c379bb17ac..ecab6a46ad 100644
--- a/package/ramsmp/Config.in
+++ b/package/ramsmp/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_RAMSMP
 	bool "ramspeed/smp"
+	depends on BR2_USE_MMU # fork()
 	help
 	  RAMspeed/SMP is a free open source command line utility
 	  to measure cache and memory performance of multiprocessor machines.