diff --git a/src/display/api.js b/src/display/api.js
index 086755f82..e2f0ef04b 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -1242,10 +1242,16 @@ class PDFDocumentProxy {
  * @property {boolean} [isEditing] - Render the page in editing mode.
  * @property {boolean} [recordOperations] - Record the dependencies and bounding
  *   boxes of all PDF operations that render onto the canvas.
- * @property {(index: number) => boolean} [operationsFilter] - If provided, only
+ * @property {OperationsFilter} [operationsFilter] - If provided, only
  *   run for which this function returns `true`.
  */
 
+/**
+ * @callback OperationsFilter
+ * @param {number} index - The index of the operation.
+ * @returns {boolean} If false, the operation is ignored.
+ */
+
 /**
  * Page getOperatorList parameters.
  *