diff --git a/src/app/thumbnails.cpp b/src/app/thumbnails.cpp
index 8ac2f1b85..07f307acc 100644
--- a/src/app/thumbnails.cpp
+++ b/src/app/thumbnails.cpp
@@ -43,7 +43,7 @@ os::Surface* get_cel_thumbnail(const doc::Cel* cel,
 
   render::Render render;
   render::Projection proj(cel->sprite()->pixelRatio(),
-                          render::Zoom(newSize.w, cel->image()->width()));
+                          render::Zoom(newSize.w, cel->bounds().w));
   render.setProjection(proj);
 
   const doc::Palette* palette = cel->sprite()->palette(cel->frame());