diff --git a/src/ol/reproj/Image.js b/src/ol/reproj/Image.js
index 3a2731c260..3002c1b23f 100644
--- a/src/ol/reproj/Image.js
+++ b/src/ol/reproj/Image.js
@@ -11,6 +11,12 @@ import {getCenter, getIntersection, getHeight, getWidth} from '../extent.js';
 import {calculateSourceResolution, render as renderReprojected} from '../reproj.js';
 import Triangulation from '../reproj/Triangulation.js';
 
+
+/**
+ * @typedef {function(module:ol/extent~Extent, number, number) : module:ol/ImageBase~ImageBase} FunctionType
+ */
+
+
 /**
  * @classdesc
  * Class encapsulating single reprojected image.
@@ -23,7 +29,7 @@ import Triangulation from '../reproj/Triangulation.js';
  * @param {module:ol/extent~Extent} targetExtent Target extent.
  * @param {number} targetResolution Target resolution.
  * @param {number} pixelRatio Pixel ratio.
- * @param {ol.ReprojImageFunctionType} getImageFunction
+ * @param {module:ol/reproj/Image~FunctionType} getImageFunction
  *     Function returning source images (extent, resolution, pixelRatio).
  */
 const ReprojImage = function(sourceProj, targetProj,
diff --git a/src/ol/typedefs.js b/src/ol/typedefs.js
index a1500d291e..5becaa88e2 100644
--- a/src/ol/typedefs.js
+++ b/src/ol/typedefs.js
@@ -181,12 +181,6 @@ ol.RasterOperation;
 ol.RegularShapeRenderOptions;
 
 
-/**
- * @typedef {function(module:ol/extent~Extent, number, number) : module:ol/ImageBase~ImageBase}
- */
-ol.ReprojImageFunctionType;
-
-
 /**
  * @typedef {function(number, number, number, number) : module:ol/Tile~Tile}
  */