diff --git a/tox.ini b/tox.ini
index e03f2989e..f31542c95 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,7 @@ envlist =
     py37
     docs
     style
-    skip_missing_interpreters = True
+skip_missing_interpreters = True
 
 [testenv]
 description = Run unit tests with pytest