diff --git a/module/VuFind/src/VuFind/Controller/CollectionsController.php b/module/VuFind/src/VuFind/Controller/CollectionsController.php
index a2ef51816e6b29998e8eb6337803e3164d939b4e..d62386910fcced39457d344d180097bc0953f941 100644
--- a/module/VuFind/src/VuFind/Controller/CollectionsController.php
+++ b/module/VuFind/src/VuFind/Controller/CollectionsController.php
@@ -178,7 +178,8 @@ class CollectionsController extends AbstractBase
         $result = $searchObject->getFullFieldFacets(
             [$browseField], false, 150000, 'index'
         );
-        $result = $result[$browseField]['data']['list'];
+        $result = isset($result[$browseField]['data']['list'])
+            ? $result[$browseField]['data']['list'] : [];
 
         $delimiter = $this->getBrowseDelimiter();
         foreach ($result as $rkey => $collection) {