diff --git a/src/grung/db.py b/src/grung/db.py
index ba970f1..ca4180a 100644
--- a/src/grung/db.py
+++ b/src/grung/db.py
@@ -55,7 +55,7 @@ class RecordTable(table.Table):
         queries = reduce(
             ior,
             [
-                Query()[field.name].matches(document[field.name], flags=re.IGNORECASE)
+                Query()[field.name].equals(document[field.name], flags=re.IGNORECASE)
                 for field in document._metadata.fields.values()
                 if field.unique
             ],