diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 668eb64305..5eea0e802c 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -7226,7 +7226,8 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
For more information on how to use the
KBUILD_DEFCONFIG variable, see the
"Using an "In-Tree" defconfig File"
- section.
+ section in the Yocto Project Linux Kernel Development
+ Manual.