diff --git a/.travis.yml b/.travis.yml
index c7baa4b91..34be83e03 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,17 +34,17 @@ matrix:
         - ps aux | grep mysql
       services: docker
     - python: "2.7"
-      env: C=1 TOXENV=py27_install BOULDER_INTEGRATION=1
+      env: TOXENV=py27_install BOULDER_INTEGRATION=1
       sudo: required
       after_failure:
         - sudo cat /var/log/mysql/error.log
         - ps aux | grep mysql
       services: docker
     - language: generic
-      env: A=1 TOXENV=py27 OS=OSX # $OS is ignored, makes job list clearer
+      env: TOXENV=py27 OS=OSX # $OS is ignored, makes job list clearer
       os: osx
     - language: generic
-      env: B=1 TOXENV=py36 OS=OSX
+      env: TOXENV=py36 OS=OSX
       os: osx
     - sudo: required
       env: TOXENV=apache_compat