diff --git a/labs/yocto-extend-recipe/yocto-extend-recipe.tex b/labs/yocto-extend-recipe/yocto-extend-recipe.tex
index 90c25c9d91..b2d164e205 100644
--- a/labs/yocto-extend-recipe/yocto-extend-recipe.tex
+++ b/labs/yocto-extend-recipe/yocto-extend-recipe.tex
@@ -67,6 +67,7 @@ \section{Add patches to apply in the recipe}
 \if\defstring{\labboard}{stm32mp1}
 Add \code{KERNEL_DEFCONFIG = ""} and \code{KERNEL_EXTERNAL_DEFCONFIG =
 "defconfig"} so it is used by the \code{linux-stm32mp} recipe.
+\footnote{These settings are specific to the \code{linux-stm32mp} recipe!}
 \else
 It is handled automatically in the \code{linux-ti-staging} original recipe.
 \fi