diff --git a/Makefile.sphinx b/Makefile.sphinx
index f1e038b..26a0aa5 100644
--- a/Makefile.sphinx
+++ b/Makefile.sphinx
@@ -1,52 +1,52 @@
 # Makefile to be included by other modules, from the TOPLEVEL/docs/ dir, to
 # automatically build sphinx documentation.
 
 APIDOC_DIR = apidoc
 APIDOC_OPTS = --ext-viewcode --separate
 SPHINXBUILD = sphinx-build
 SPHINXAPIDOC = sphinx-apidoc
 SPHINX_OPTS =
 SPHINX_BUILDDIR = _build
 SPHINX_SRCDIR = .
 
 # relative to docs/ dir. Hence "." exclude the docs/ dir itself
-APIDOC_EXCLUDES = . ../setup.py
+APIDOC_EXCLUDES = . ../setup.py ../conftest.py
 APIDOC_EXCLUDES += ../swh/*/tests ../swh/*/tests/* ../swh/*/*/tests/* ../swh/*/*/*/tests/*
 APIDOC_EXCLUDES += ../swh/*/migrations ../swh/*/migrations/* ../swh/*/*/migrations/* ../swh/*/*/*/migrations/*
 APIDOC_EXCLUDES += ../bin ../dist ../utils ../node_modules
 
 html: sphinx/html
 help: sphinx/help
 
 # allow to skip apidoc generation, for modules where the overall documentation
 # structure, table of contents, etc., is manually curated
 ifeq ($(SKIP_APIDOC),yes)
 apidoc_dep =
 else
 apidoc_dep = apidoc-stamp
 endif
 
 sphinx/clean:
 	$(SPHINXBUILD) -M clean $(SPHINX_SRCDIR) $(SPHINX_BUILDDIR) $(SPHINXOPTS)
 sphinx/%: $(apidoc_dep)
 	$(SPHINXBUILD) -b $* $(SPHINX_SRCDIR) $(SPHINX_BUILDDIR)/$* $(SPHINXOPTS)
 
 apidoc: $(apidoc_dep)
 apidoc-stamp:
 	$(SPHINXAPIDOC) $(APIDOC_OPTS) -o $(APIDOC_DIR) .. $(APIDOC_EXCLUDES)
 	# to silent Sphinx warnings about apidoc documents not included in any toctree
 	find $(shell pwd)/apidoc -name "*.rst" | xargs sed -i '1i:orphan:\n'
 	touch $@
 
 assets:
 
 .PHONY: clean clean-apidoc
 clean: sphinx/clean clean-apidoc
 clean-apidoc:
 	rm -rf $(APIDOC_DIR)
 	rm -f *-stamp
 
 
 # Local Variables:
 # mode: makefile
 # End: