diff --git a/PIL/Image.py b/PIL/Image.py
index 37cee9e07..98e3644c0 100644
--- a/PIL/Image.py
+++ b/PIL/Image.py
@@ -59,7 +59,7 @@ try:
     # Note that other modules should not refer to _imaging directly;
     # import Image and use the Image.core variable instead.
     # Also note that Image.core is not a publicly documented interface,
-    # and should be considered private and subject to change. 
+    # and should be considered private and subject to change.
     from PIL import _imaging as core
     if PILLOW_VERSION != getattr(core, 'PILLOW_VERSION', None):
         raise ImportError("The _imaging extension was built for another "
@@ -744,7 +744,7 @@ class Image:
         associated with the image.
 
         :returns: An image access object.
-        :rtype: :ref:`PixelAccess` or :py:class:`PIL.PyAccess` 
+        :rtype: :ref:`PixelAccess` or :py:class:`PIL.PyAccess`
         """
         if self.im and self.palette and self.palette.dirty:
             # realize palette
@@ -942,14 +942,14 @@ class Image:
         """
         Convert the image to 'P' mode with the specified number
         of colors.
-        
+
         :param colors: The desired number of colors, <= 256
         :param method: 0 = median cut
                        1 = maximum coverage
                        2 = fast octree
         :param kmeans: Integer
         :param palette: Quantize to the :py:class:`PIL.ImagingPalette` palette.
-        :returns: A new image                        
+        :returns: A new image
 
         """
 
@@ -1752,7 +1752,7 @@ class Image:
         """
         return 0
 
-    def thumbnail(self, size, resample=LANCZOS):
+    def thumbnail(self, size, resample=BICUBIC):
         """
         Make this image into a thumbnail.  This method modifies the
         image to contain a thumbnail version of itself, no larger than
@@ -1770,7 +1770,7 @@ class Image:
         :param resample: Optional resampling filter.  This can be one
            of :py:attr:`PIL.Image.NEAREST`, :py:attr:`PIL.Image.BILINEAR`,
            :py:attr:`PIL.Image.BICUBIC`, or :py:attr:`PIL.Image.LANCZOS`.
-           If omitted, it defaults to :py:attr:`PIL.Image.LANCZOS`.
+           If omitted, it defaults to :py:attr:`PIL.Image.BICUBIC`.
            (was :py:attr:`PIL.Image.NEAREST` prior to version 2.5.0)
         :returns: None
         """
diff --git a/PIL/JpegImagePlugin.py b/PIL/JpegImagePlugin.py
index a3b603458..9dd79d5e6 100644
--- a/PIL/JpegImagePlugin.py
+++ b/PIL/JpegImagePlugin.py
@@ -355,7 +355,7 @@ class JpegImageFile(ImageFile.ImageFile):
             scale = s
 
         self.tile = [(d, e, o, a)]
-        self.decoderconfig = (scale, 1)
+        self.decoderconfig = (scale, 0)
 
         return self