diff --git a/tox.ini b/tox.ini
index 5bbc1147..84b5aa0e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -51,7 +51,6 @@ commands = sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:pdf-docs]
 basepython = python3
-envdir = {toxworkdir}/docs
 deps = {[testenv:docs]deps}
 allowlist_externals =
   make