diff --git a/package/boost/Config.in b/package/boost/Config.in
index 515b2cdcdf..68c3909664 100644
--- a/package/boost/Config.in
+++ b/package/boost/Config.in
@@ -77,6 +77,7 @@ config BR2_PACKAGE_BOOST_SYSTEM
 
 config BR2_PACKAGE_BOOST_TEST
 	bool "boost-test"
+	depends on BR2_USE_MMU # fork()
 
 config BR2_PACKAGE_BOOST_THREAD
 	bool "boost-thread"