diff --git a/docs/manual/make-tips.txt b/docs/manual/make-tips.txt
index 869b6807dd..df3b888c25 100644
--- a/docs/manual/make-tips.txt
+++ b/docs/manual/make-tips.txt
@@ -35,7 +35,8 @@ some settings in the +.config+ file may hide some targets:
 * +barebox-menuconfig+ and +barebox-savedefconfig+ only work when the
   +barebox+ bootloader is enabled.
 * +uboot-menuconfig+ and +uboot-savedefconfig+ only work when the
-  +U-Boot+ bootloader is enabled.
+  +U-Boot+ bootloader is enabled and the +uboot+ build system is set
+  to +Kconfig+.
 
 .Cleaning: