diff --git a/.travis.yml b/.travis.yml
index 58c7e67519d..54625f9d20a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -98,14 +98,22 @@ before_script:
       export _PYTEST_TOX_EXTRA_DEP=coverage-enable-subprocess
     fi
 
-script: tox --recreate
+script:
+  - tox --recreate
+
+  - |
+    # Cover terminalreport for isatty.
+    # Add last TOXENV to $PATH (also used below).
+    PATH="$PWD/.tox/${TOXENV##*,}/bin:$PATH"
+    python -c 'import sys; assert sys.stdout.isatty()'
+    # if [[ "$PYTEST_COVERAGE" = 1 ]]; then
+    #   coverage run -m pytest --help
+    # fi
 
 after_success:
   - |
     if [[ "$PYTEST_COVERAGE" = 1 ]]; then
       set -e
-      # Add last TOXENV to $PATH.
-      PATH="$PWD/.tox/${TOXENV##*,}/bin:$PATH"
       coverage combine
       coverage xml
       coverage report -m