diff --git a/src/gui/imgview.py b/src/gui/imgview.py
--- a/src/gui/imgview.py
+++ b/src/gui/imgview.py
@@ -29,8 +29,7 @@ class ImgView(ResizableCanvas):
 		self.delete("all")
 
 		if self._img:
-			img=self._img.copy()
-			img.thumbnail((int(self._width),int(self._height)))
+			img=self._img.resize((int(self._width),int(self._height)))
 			self._tkImg=ImageTk.PhotoImage(img) # just to save the image from garbage collector
 			self.create_image(self._width//2, self._height//2, anchor="center", image=self._tkImg)