diff --git a/backend-compliance/compliance/tests/test_corpus_overview.py b/backend-compliance/compliance/tests/test_corpus_overview.py
new file mode 100644
index 00000000..c32ee86f
--- /dev/null
+++ b/backend-compliance/compliance/tests/test_corpus_overview.py
@@ -0,0 +1,17 @@
+"""Tests fuer die Korpus-/Lizenz-Uebersicht (#74) — im CI-Pfad (compliance/tests/)."""
+
+from __future__ import annotations
+
+from compliance.services.corpus_overview import license_tier_label
+
+
+def test_license_tier_labels():
+    assert "frei nutzbar" in license_tier_label(1)
+    assert "Attribution" in license_tier_label(2)
+    assert "Eigenformulierung" in license_tier_label(3)
+
+
+def test_license_tier_label_unknown_safe():
+    assert license_tier_label(None) == "unbekannt"
+    assert license_tier_label(0) == "unbekannt"
+    assert license_tier_label(99) == "unbekannt"