diff --git a/src/ol/tileloadfunction.js b/src/ol/tileloadfunction.js
new file mode 100644
index 0000000000..f1f527066f
--- /dev/null
+++ b/src/ol/tileloadfunction.js
@@ -0,0 +1,7 @@
+goog.provide('ol.TileLoadFunctionType');
+
+
+/**
+ * @typedef {function(ol.ImageTile, string)}
+ */
+ol.TileLoadFunctionType;