diff --git a/package/spawn-fcgi/Config.in b/package/spawn-fcgi/Config.in
index 34cbbb1739..59791e8d8e 100644
--- a/package/spawn-fcgi/Config.in
+++ b/package/spawn-fcgi/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_SPAWN_FCGI
 	bool "spawn-fcgi"
+	depends on BR2_USE_MMU # fork()
 	help
 	  FastCGI process spawner.
 	  Project split from lighttpd.