diff --git a/package/tar/Config.in b/package/tar/Config.in
index 06a58250e7..74b0219919 100644
--- a/package/tar/Config.in
+++ b/package/tar/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_TAR
 	bool "tar"
 	depends on BR2_USE_WCHAR
+	depends on BR2_USE_MMU # fork()
 	help
 	  A program that saves many files together into a single tape or disk
 	  archive, and can restore individual files from the archive.