diff --git a/Tests/test_file_gif.py b/Tests/test_file_gif.py
index 6a4b14d40..838894988 100644
--- a/Tests/test_file_gif.py
+++ b/Tests/test_file_gif.py
@@ -230,6 +230,15 @@ class TestFileGif(PillowTestCase):
 
         self.assertEqual(im.info, info)
 
+    def test_seek_rewind(self):
+        im = Image.open("Tests/images/iss634.gif")
+        im.seek(2)
+        im.seek(1)
+
+        expected = Image.open("Tests/images/iss634.gif")
+        expected.seek(1)
+        self.assert_image_equal(im, expected)
+
     def test_n_frames(self):
         for path, n_frames in [
             [TEST_GIF, 1],
diff --git a/src/PIL/GifImagePlugin.py b/src/PIL/GifImagePlugin.py
index 2ebd8b248..3dc13ac03 100644
--- a/src/PIL/GifImagePlugin.py
+++ b/src/PIL/GifImagePlugin.py
@@ -122,6 +122,8 @@ class GifImageFile(ImageFile.ImageFile):
         if not self._seek_check(frame):
             return
         if frame < self.__frame:
+            if frame != 0:
+                self.im = None
             self._seek(0)
 
         last_frame = self.__frame