diff --git a/docs/manual/adding-packages-generic.txt b/docs/manual/adding-packages-generic.txt
index 51408e8694..0e111e1199 100644
--- a/docs/manual/adding-packages-generic.txt
+++ b/docs/manual/adding-packages-generic.txt
@@ -528,8 +528,8 @@ endef
 
 In the action definitions, you can use the following variables:
 
-* +$(FOO_PKGDIR)+ contains the path to the directory containing the
-  +foo.mk+ and +Config.in+ files. This variable is useful when it is
+* +$(LIBFOO_PKGDIR)+ contains the path to the directory containing the
+  +libfoo.mk+ and +Config.in+ files. This variable is useful when it is
   necessary to install a file bundled in Buildroot, like a runtime
   configuration file, a splashscreen image...