diff --git a/tox.ini b/tox.ini
index 34a13c79..b545da4f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -43,7 +43,6 @@ deps =
 commands = sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:pdf-docs]
-envdir = {toxworkdir}/docs
 deps = {[testenv:docs]deps}
 allowlist_externals =
   make