diff --git a/config.jsonc b/config.jsonc
index f61268d..f791401 100644
--- a/config.jsonc
+++ b/config.jsonc
@@ -174,7 +174,7 @@ examples (config.SITENAME.jsonc) that are part of this pan.do/ra distribution.
             "id": "type",
             "operator": "+",
             "title": "Type",
-            "type": {"string"},
+            "type": ["string"],
             "filter": true,
             "find": true,
             "sort": true,