diff --git a/src/PIL/GifImagePlugin.py b/src/PIL/GifImagePlugin.py
index 58c460ef3..b00953a9d 100644
--- a/src/PIL/GifImagePlugin.py
+++ b/src/PIL/GifImagePlugin.py
@@ -116,8 +116,8 @@ class GifImageFile(ImageFile.ImageFile):
             # check if palette contains colour indices
             p = self.fp.read(3 << bits)
             if self._is_palette_needed(p):
-                p = ImagePalette.raw("RGB", p)
-                self.global_palette = self.palette = p
+                palette = ImagePalette.raw("RGB", p)
+                self.global_palette = self.palette = palette
 
         self._fp = self.fp  # FIXME: hack
         self.__rewind = self.fp.tell()
diff --git a/src/PIL/XVThumbImagePlugin.py b/src/PIL/XVThumbImagePlugin.py
index cde28388f..192c041d9 100644
--- a/src/PIL/XVThumbImagePlugin.py
+++ b/src/PIL/XVThumbImagePlugin.py
@@ -66,10 +66,10 @@ class XVThumbImageFile(ImageFile.ImageFile):
                 break
 
         # parse header line (already read)
-        s = s.strip().split()
+        w, h = s.strip().split(maxsplit=2)[:2]
 
         self._mode = "P"
-        self._size = int(s[0]), int(s[1])
+        self._size = int(w), int(h)
 
         self.palette = ImagePalette.raw("RGB", PALETTE)