2 files changed, 3 insertions, 1 deletions
diff --git a/.gitignore b/.gitignore
index 356570e..4175bb8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,5 +15,6 @@ env
 env?
 .idea
 .tox
+.vscode/
 /rel
 /wheels
diff --git a/doc/Makefile b/doc/Makefile
index 558d0a7..81ec409 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -10,7 +10,8 @@ check: doctest
 PYTHON := python$(PYTHON_VERSION)
 PYTHON_VERSION ?= $(shell $(PYTHON) -c 'import sys; print ("%d.%d" % sys.version_info[:2])')
 
-SPHOPTS=PYTHONPATH=$$(pwd)/../build/lib.$(PYTHON_VERSION)/ SPHINXBUILD=$$(pwd)/env/bin/sphinx-build
+SPHINXBUILD ?= $$(pwd)/env/bin/sphinx-build
+SPHOPTS = PYTHONPATH=$$(pwd)/../build/lib.$(PYTHON_VERSION)/ SPHINXBUILD=$(SPHINXBUILD)
 
 html:
 	$(MAKE) PYTHON=$(PYTHON) -C .. package