diff --git a/tox.ini b/tox.ini
index 74a7710..a9f506a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -36,7 +36,6 @@ deps = -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -W --keep-going -b html doc/source doc/build/html
 
 [testenv:pdf-docs]
-envdir = {toxworkdir}/docs
 deps = {[testenv:docs]deps}
 allowlist_externals =
   make