diff --git a/package/lsof/Config.in b/package/lsof/Config.in
index cc7512c258..820cbf782b 100644
--- a/package/lsof/Config.in
+++ b/package/lsof/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_LSOF
 	bool "lsof"
+	depends on BR2_USE_MMU # fork()
 	help
 	  lsof (LiSt Open Files)
 	  The lsof tool lists information about files opened by