diff --git a/package/ngircd/Config.in b/package/ngircd/Config.in
index e8fc3d0569..f1d8bea904 100644
--- a/package/ngircd/Config.in
+++ b/package/ngircd/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_NGIRCD
 	bool "ngircd"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_ZLIB
 	help
 	  Next Generation IRC server deamon.