diff --git a/package/haserl/Config.in b/package/haserl/Config.in
index 7710fa1c3b..36bfca75c5 100644
--- a/package/haserl/Config.in
+++ b/package/haserl/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_HASERL
 	bool "haserl"
+	depends on BR2_USE_MMU # fork()
 	help
 	  Haserl is a small cgi wrapper that enables shell scripts to be
 	  embedded into html documents. It is intended for environments