1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 655aa7388..6505b8512 100644
--- a/tox.ini
+++ b/tox.ini
@@ -49,7 +49,7 @@ deps =
     -r{toxinidir}/etc/requirements-docs.txt
     -c{toxinidir}/etc/upper-constraints.os.txt
     -c{toxinidir}/etc/upper-constraints.onap.txt
-commands = sphinx-build -q -b linkcheck -d {envtmpdir}/doctrees ./docs/ {toxinidir}/docs/_build/linkcheck
+commands = sphinx-build -W -q -b linkcheck -d {envtmpdir}/doctrees ./docs/ {toxinidir}/docs/_build/linkcheck
 
 [testenv:spellcheck]
 basepython = python3