diff --git a/admin/build-doc b/admin/build-doc
index df77a35d287..ae9050d7a75 100755
--- a/admin/build-doc
+++ b/admin/build-doc
@@ -51,7 +51,7 @@ $vdir/bin/pip install --quiet -r ../admin/doc-requirements.txt
 install -d -m0755 \
     output/html \
     output/man
-PYTHONPATH=`pwd`/../src/pybind $vdir/bin/sphinx-build -a -b dirhtml -d doctrees ../doc output/html
+PYTHONPATH=`pwd`/../src/pybind $vdir/bin/sphinx-build -a -n -b dirhtml -d doctrees ../doc output/html
 $vdir/bin/sphinx-build -a -b man -d doctrees ../doc output/man
 
 #