diff --git a/package/doc-asciidoc.mk b/package/doc-asciidoc.mk
index 9a182707d6..649ee69c65 100644
--- a/package/doc-asciidoc.mk
+++ b/package/doc-asciidoc.mk
@@ -60,6 +60,10 @@ asciidoc-check-dependencies-$(5):
 $(1)-check-dependencies-$(5): asciidoc-check-dependencies-$(5)
 	$$(Q)$$(foreach hook,$$($(2)_CHECK_DEPENDENCIES_$$(call UPPERCASE,$(5))_HOOKS),$$(call $$(hook))$$(sep))
 
+ifneq ($$(wildcard $$($(2)_ASCIIDOC_CONF)),)
+$(2)_$(4)_ASCIIDOC_OPTS += -f $$($(2)_ASCIIDOC_CONF)
+endif
+
 $(2)_$(4)_ASCIIDOC_CONF = $(3)/asciidoc-$(4).conf
 ifneq ($$(wildcard $$($(2)_$(4)_ASCIIDOC_CONF)),)
 $(2)_$(4)_ASCIIDOC_OPTS += -f $$($(2)_$(4)_ASCIIDOC_CONF)
@@ -132,6 +136,8 @@ $$(BUILD_DIR)/docs/$(1)/.stamp_doc_rsynced:
 
 $(1)-prepare-sources: $$(BUILD_DIR)/docs/$(1)/.stamp_doc_rsynced
 
+$(2)_ASCIIDOC_CONF = $(3)/asciidoc.conf
+
 $(call ASCIIDOC_INNER,$(1),$(2),$(3),xhtml,html,html,HTML,\
 	--xsltproc-opts "--stringparam toc.section.depth 1")