diff --git a/Makefile b/Makefile
index 65e89b5095..7df22fcc5d 100644
--- a/Makefile
+++ b/Makefile
@@ -1078,7 +1078,7 @@ sphinxdocs: $(MANUAL_BUILDDIR)/devel/index.html \
 # a single doctree: https://github.com/sphinx-doc/sphinx/issues/2946
 build-manual = $(call quiet-command,CONFDIR="$(qemu_confdir)" $(SPHINX_BUILD) $(if $(V),,-q) -W -b $2 -D version=$(VERSION) -D release="$(FULL_VERSION)" -d .doctrees/$1-$2 $(SRC_PATH)/docs/$1 $(MANUAL_BUILDDIR)/$1 ,"SPHINX","$(MANUAL_BUILDDIR)/$1")
 # We assume all RST files in the manual's directory are used in it
-manual-deps = $(wildcard $(SRC_PATH)/docs/$1/*.rst) \
+manual-deps = $(wildcard $(SRC_PATH)/docs/$1/*.rst $(SRC_PATH)/docs/$1/*/*.rst) \
               $(SRC_PATH)/docs/defs.rst.inc \
               $(SRC_PATH)/docs/$1/conf.py $(SRC_PATH)/docs/conf.py \
               $(SRC_PATH)/docs/sphinx/*.py