diff --git a/src/PIL/ImageFile.py b/src/PIL/ImageFile.py
index 8e003886c..c2852bbdb 100644
--- a/src/PIL/ImageFile.py
+++ b/src/PIL/ImageFile.py
@@ -182,9 +182,7 @@ class ImageFile(Image.Image):
                     import mmap
 
                     with open(self.filename, "r") as fp:
-                        self.map = mmap.mmap(
-                            fp.fileno(), 0, access=mmap.ACCESS_READ
-                        )
+                        self.map = mmap.mmap(fp.fileno(), 0, access=mmap.ACCESS_READ)
                     self.im = Image.core.map_buffer(
                         self.map, self.size, decoder_name, extents, offset, args
                     )