diff --git a/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php b/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
index 3560d6cb..6d1e6534 100644
--- a/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
+++ b/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
@@ -258,7 +258,7 @@ class IIIFManifest extends StylePluginBase {
    * @return array
    *   List of IIIF URLs to display in the Openseadragon viewer.
    */
-  protected function getTileSourceFromRow(ResultRow $row, $iiif_address, $iiif_base_id, $structured_text_term) {
+  protected function getTileSourceFromRow(ResultRow $row, $iiif_address, $iiif_base_id, TermInterface $structured_text_term) {
     $canvases = [];
     foreach (array_filter(array_values($this->options['iiif_tile_field'])) as $iiif_tile_field) {
       $viewsField = $this->view->field[$iiif_tile_field];