diff --git a/mm/Kconfig b/mm/Kconfig
index 43ea8c3..ee9f3e0 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -221,6 +221,7 @@
 
 config DEFAULT_MMAP_MIN_ADDR
         int "Low address space to protect from user allocation"
+	depends on MMU
         default 4096
         help
 	  This is the portion of low virtual memory which should be protected