diff --git a/includes/classes/Feature/InstantResults/InstantResults.php b/includes/classes/Feature/InstantResults/InstantResults.php
index 334e07fec6..eeb5f56764 100644
--- a/includes/classes/Feature/InstantResults/InstantResults.php
+++ b/includes/classes/Feature/InstantResults/InstantResults.php
@@ -624,6 +624,14 @@ public function get_facets() {
 		$taxonomies = apply_filters( 'ep_facet_include_taxonomies', $taxonomies );
 
 		foreach ( $taxonomies as $slug => $taxonomy ) {
+			if ( is_string( $taxonomy ) ) {
+				$slug     = $taxonomy;
+				$taxonomy = get_taxonomy( $slug );
+			}
+
+			if ( ! ( $taxonomy instanceof \WP_Taxonomy ) ) {
+				continue;
+			}
 			$name   = 'tax-' . $slug;
 			$labels = get_taxonomy_labels( $taxonomy );