diff --git a/src/redactable/detectors/schema_hints.py b/src/redactable/detectors/schema_hints.py
index 1c040c4..d867ae0 100644
--- a/src/redactable/detectors/schema_hints.py
+++ b/src/redactable/detectors/schema_hints.py
@@ -24,7 +24,7 @@
 
 class SchemaHintDetector:
     name = "schema_hints"
-    labels = tuple(set(_HINTS.values()))
+    labels = tuple(dict.fromkeys(_HINTS.values()))
     confidence = 0.6
 
     def detect(self, text: str, *, context=None):