diff --git a/modules/config.xqm b/modules/config.xqm
index 9432b0aa..d9d1ec51 100644
--- a/modules/config.xqm
+++ b/modules/config.xqm
@@ -188,10 +188,10 @@ declare function config:pocom-people-last-modified() as xs:dateTime {
 declare variable $config:PUBLICATIONS :=
     map {
         "app": map {
-            "publication-last-modified": max(
+            "publication-last-modified": max((
                 config:last-modified-from-repo-xml($config:app-root),
                 config:last-modified-from-repo-xml($config:CAROUSEL_COL)
-            )
+            ))
         },
         "frus": map {
             "collection": $config:FRUS_COL_VOLUMES,