diff --git a/pkgs/by-name/py/pylint-exit/package.nix b/pkgs/by-name/py/pylint-exit/package.nix
index 62aa1fe9a2c0..5a99780225ad 100644
--- a/pkgs/by-name/py/pylint-exit/package.nix
+++ b/pkgs/by-name/py/pylint-exit/package.nix
@@ -27,7 +27,7 @@ buildPythonApplication rec {
   buildInputs = [ m2r ];
 
   # setup.py reads its version from the TRAVIS_TAG environment variable
-  TRAVIS_TAG = version;
+  env.TRAVIS_TAG = version;
 
   checkPhase = ''
     ${python.interpreter} -m doctest pylint_exit.py