diff --git a/contrib/heptapod-ci.yml b/contrib/heptapod-ci.yml
--- a/contrib/heptapod-ci.yml
+++ b/contrib/heptapod-ci.yml
@@ -6,7 +6,7 @@
     - hg clone . /tmp/mercurial-ci/ --noupdate
     - hg -R /tmp/mercurial-ci/ update `hg log --rev '.' --template '{node}'`
     - cd /tmp/mercurial-ci/
-    - ls -1 tests/test-check-*.* > /tmp/check-tests.txt
+    - ls -1 tests/test-check-*.* | xargs -n 1 basename > /tmp/check-tests.txt
 
 variables:
     PYTHON: python