diff --git a/package/rsync/Config.in b/package/rsync/Config.in
index 0f33774..be95a7c 100644
--- a/package/rsync/Config.in
+++ b/package/rsync/Config.in
@@ -1,5 +1,7 @@
 config BR2_PACKAGE_RSYNC
 	bool "rsync"
+	# fork()
+	depends on BR2_USE_MMU
 	help
 	  File transfer program to keep remote files in sync.