diff --git a/src/visual/ImageStim.js b/src/visual/ImageStim.js
index a2d639cd..66703ef8 100644
--- a/src/visual/ImageStim.js
+++ b/src/visual/ImageStim.js
@@ -194,7 +194,7 @@ export class ImageStim extends util.mix(VisualStim).with(ColorMixin)
 			}
 
 			const existingImage = this.getImage();
-			const hasChanged = existingImage ? existingImage.src !== image.src : true;
+			const hasChanged = existingImage && image ? existingImage.src !== image.src : existingImage || image;
 
 			this._setAttribute("image", image, log);