diff --git a/models/Thumbnail.php b/models/Thumbnail.php
index 5eb562c..d35c260 100644
--- a/models/Thumbnail.php
+++ b/models/Thumbnail.php
@@ -335,6 +335,11 @@ class Thumbnail
 		{
 			$thumb_selector = $this->width . 'x' . $this->height . $this->filename_suffix;
 			$this->thumbnails[$thumb_selector] = $filename !== 'NULL' ? $filename : null;
+
+			// For consistency, write new thumbnail filename to parent Image object.
+			// TODO: there could still be an inconsistency if multiple objects exists for the same image asset.
+			$this->image->getThumbnails()[$thumb_selector] = $this->thumbnails[$thumb_selector];
+
 			return $success;
 		}
 		else