diff --git a/tox.ini b/tox.ini
index 3fc13854..04d5d3ba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,7 +21,7 @@ deps =
 commands =
     sphinx-build -W -b html -d {envtmpdir}/doctrees docs docs/_build/html
     sphinx-build -W -b latex -d {envtmpdir}/doctrees docs docs/_build/latex
-    /bin/bash -c "if [[ '$CI' != 'true' ]]; then sphinx-build -W -b linkcheck docs docs/_build/html; fi"
+    /bin/bash -c "if [[ $CI != 'true' ]]; then sphinx-build -W -b linkcheck docs docs/_build/html; fi"
 
 [testenv:lint]
 basepython = python2.7