diff --git a/package/libvncserver/Config.in b/package/libvncserver/Config.in
index ff83e343dd..07b77f519e 100644
--- a/package/libvncserver/Config.in
+++ b/package/libvncserver/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_LIBVNCSERVER
 	bool "libvncserver"
+	depends on BR2_USE_MMU # VNCommand.c uses fork()
 	help
 	  libvncserver is a VNC server/client library.