diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 33d9b94..56087b8 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -34,7 +34,7 @@ jobs:
         run: make check-style
 
       - name: Lint YAML tests
-        run: "${GITHUB_WORKSPACE}/.github/lint-files.sh 'tests/*.yaml' 'yamllint'"
+        run: make check-yaml
 
   test-yaml:
     runs-on: ubuntu-22.04
diff --git a/Makefile b/Makefile
index 978269a..7414e72 100644
--- a/Makefile
+++ b/Makefile
@@ -41,6 +41,11 @@ check-style:
 	isort --check `git ls-files | grep "\.py$$"`
 	black --check `git ls-files | grep "\.py$$"`
 
+check-yaml:
+	@# Do not analyse .gitignored files.
+	@# `make` needs `$$` to output `$`. Ref: http://stackoverflow.com/questions/2382764.
+	yamllint `git ls-files | grep "\.yaml$$"`
+
 test: clean check-syntax-errors check-style
 	openfisca test --country-package openfisca_country_template openfisca_country_template/tests