diff --git a/Makefile.in b/Makefile.in
index 8968fabf1b4b3..20cd0fed46369 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -267,3 +267,5 @@ ifneq ($(strip $(findstring TAGS.emacs,$(MAKECMDGOALS)) \
   CFG_INFO := $(info cfg: including ctags rules)
   include $(CFG_SRC_DIR)mk/ctags.mk
 endif
+
+doc: docs