diff --git a/src/ol/source/imagecanvassource.js b/src/ol/source/imagecanvassource.js
index 8532e8b313..57f3d8b5c3 100644
--- a/src/ol/source/imagecanvassource.js
+++ b/src/ol/source/imagecanvassource.js
@@ -59,7 +59,7 @@ goog.inherits(ol.source.ImageCanvas, ol.source.Image);
 /**
  * @inheritDoc
  */
-ol.source.ImageCanvas.prototype.getImage =
+ol.source.ImageCanvas.prototype.getImageInternal =
     function(extent, resolution, pixelRatio, projection) {
   resolution = this.findNearestResolution(resolution);
 
diff --git a/src/ol/source/imagemapguidesource.js b/src/ol/source/imagemapguidesource.js
index 031becffb9..2ff6a92701 100644
--- a/src/ol/source/imagemapguidesource.js
+++ b/src/ol/source/imagemapguidesource.js
@@ -126,7 +126,7 @@ ol.source.ImageMapGuide.prototype.getParams = function() {
 /**
  * @inheritDoc
  */
-ol.source.ImageMapGuide.prototype.getImage =
+ol.source.ImageMapGuide.prototype.getImageInternal =
     function(extent, resolution, pixelRatio, projection) {
   resolution = this.findNearestResolution(resolution);
   pixelRatio = this.hidpi_ ? pixelRatio : 1;
diff --git a/src/ol/source/imagestaticsource.js b/src/ol/source/imagestaticsource.js
index 8bffee68fe..f6e57ce82d 100644
--- a/src/ol/source/imagestaticsource.js
+++ b/src/ol/source/imagestaticsource.js
@@ -62,7 +62,7 @@ goog.inherits(ol.source.ImageStatic, ol.source.Image);
 /**
  * @inheritDoc
  */
-ol.source.ImageStatic.prototype.getImage =
+ol.source.ImageStatic.prototype.getImageInternal =
     function(extent, resolution, pixelRatio, projection) {
   if (ol.extent.intersects(extent, this.image_.getExtent())) {
     return this.image_;
diff --git a/src/ol/source/imagewmssource.js b/src/ol/source/imagewmssource.js
index e9b49b95fd..72eabf98fb 100644
--- a/src/ol/source/imagewmssource.js
+++ b/src/ol/source/imagewmssource.js
@@ -185,7 +185,7 @@ ol.source.ImageWMS.prototype.getParams = function() {
 /**
  * @inheritDoc
  */
-ol.source.ImageWMS.prototype.getImage =
+ol.source.ImageWMS.prototype.getImageInternal =
     function(extent, resolution, pixelRatio, projection) {
 
   if (this.url_ === undefined) {