diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index f7dfb1a..5e4c0a5 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -19,15 +19,7 @@ jobs:
       - name: Validate XML definitions
         run: |
           if command -v xmllint >/dev/null; then
-            for f in $(find . -name '*.xml'); do
-              xmllint --noout "$f"
-            done
+            find . -name '*.xml' -exec xmllint --noout {} +
           else
-            python3 - <<'EOF'
-            import glob, xml.etree.ElementTree as ET
-            files = glob.glob('**/*.xml', recursive=True)
-            for f in files:
-                ET.parse(f)  # raises on malformed XML
-            print(f"ok: {len(files)} XML files well-formed")
-            EOF
+            python3 -c "import glob, xml.etree.ElementTree as ET; [ET.parse(f) for f in glob.glob('**/*.xml', recursive=True)]"
           fi
\ No newline at end of file