--- a/taskcluster/ci/marionette-harness/kind.yml
+++ b/taskcluster/ci/marionette-harness/kind.yml
@@ -25,17 +25,17 @@ jobs:
             tier: 2
             symbol: tc(Mn-h)
         worker-type: aws-provisioner-v1/desktop-test-xlarge
         worker:
             implementation: docker-worker
             docker-image: {in-tree: desktop-build}  # NOTE: better to use the lint image
             env:
                 JOB_SCRIPT: "taskcluster/scripts/tester/harness-test-linux.sh"
-                MOZHARNESS_SCRIPT: "testing/mozharness/scripts/marionette_harness_tests.py\n" # NOTE: remove trailing newline
+                MOZHARNESS_SCRIPT: "testing/mozharness/scripts/marionette_harness_tests.py"
                 TOOLS_DISABLE: "true"
                 TOOLTOOL_REPO: "https://github.com/mozilla/build-tooltool"
                 TOOLTOOL_REV: "master"
             artifacts:
               - name: public/logs/
                 path: /home/worker/workspace/mozharness_workspace/upload/logs/
                 type: directory
             command: