diff --git a/cmb2-attached-posts-field.php b/cmb2-attached-posts-field.php
index 6cdc6b9..3e15700 100644
--- a/cmb2-attached-posts-field.php
+++ b/cmb2-attached-posts-field.php
@@ -81,7 +81,7 @@ public function render( $field, $escaped_value, $object_id, $object_type, $field
 
 		// Open our retrieved, or found posts, list
 		echo '<div class="retrieved-wrap column-wrap">';
-		echo '<h4 class="attached-posts-section">' . sprintf( __( 'Available %s', 'cmb' ), $attached_post_type->labels->name ) . '</h4>';
+		echo '<h4 class="attached-posts-section">' . sprintf( __( 'Available %s', 'cmb' ), implode( '/', $post_type_labels ) ) . '</h4>';
 
 		// Set .has_thumbnail
 		$has_thumbnail = $field->options( 'show_thumbnails' ) ? ' has-thumbnails' : '';
@@ -118,7 +118,7 @@ public function render( $field, $escaped_value, $object_id, $object_type, $field
 
 		// Open our attached posts list
 		echo '<div class="attached-wrap column-wrap">';
-		echo '<h4 class="attached-posts-section">' . sprintf( __( 'Attached %s', 'cmb' ), $attached_post_type->labels->name ) . '</h4>';
+		echo '<h4 class="attached-posts-section">' . sprintf( __( 'Attached %s', 'cmb' ), implode( '/', $post_type_labels ) ) . '</h4>';
 
 		if ( $filter_boxes ) {
 			printf( $filter_boxes, 'attached-search' );