diff --git a/src/ol/source/IIIF.js b/src/ol/source/IIIF.js
index 1518da994d..4152ed8bc8 100644
--- a/src/ol/source/IIIF.js
+++ b/src/ol/source/IIIF.js
@@ -57,7 +57,8 @@ function formatPercentage(percentage) {
 class IIIF extends TileImage {
 
   /**
-   * @param {Options} opt_options
+   * @param {Options} opt_options Tile source options. Use {@link import("../format/IIIFInfo.js").IIIFInfo}
+   * to parse Image API service information responses into constructor options.
    * @api
    */
   constructor(opt_options) {