diff --git a/lib/make/mb_env.mk b/lib/make/mb_env.mk
index bf0d616..3d48113 100644
--- a/lib/make/mb_env.mk
+++ b/lib/make/mb_env.mk
@@ -1,6 +1,6 @@
 
 MB_ENV ?= on
-$(call mb-make-call,mb-doc-variable,MB_ENV,Enables VERBOSE and DEBUG variable parsing.)
+$(call mb-make-call,mb-doc-variable-deep,MB_ENV,Enables VERBOSE and DEBUG variable parsing.)
 
 
 #