diff --git a/src/PIL/CurImagePlugin.py b/src/PIL/CurImagePlugin.py
index dca7f7d56..29c6479ac 100644
--- a/src/PIL/CurImagePlugin.py
+++ b/src/PIL/CurImagePlugin.py
@@ -150,16 +150,17 @@ class CurFile(IcoImagePlugin.IcoFile):
                 if not icon_header[j]:
                     icon_header[j] = 256
 
-           
             icon_header["dim"] = (icon_header["width"], icon_header["height"])
             icon_header["square"] = icon_header["width"] * icon_header["height"]
 
             # TODO: This needs further investigation. Cursor files do not really specify their bpp
             # like ICO's as those bits are used for the y_hotspot. For now, bpp is calculated by
-            # subtracting the AND mask (equal to number of pixels * 1bpp) and dividing by the number 
+            # subtracting the AND mask (equal to number of pixels * 1bpp) and dividing by the number
             # of pixels.
             BITMAP_INFO_HEADER_SIZE = 40
-            icon_header["bpp"] = (icon_header["size"] - BITMAP_INFO_HEADER_SIZE) * 8 - (icon_header["square"]) // icon_header["square"]
+            icon_header["bpp"] = (icon_header["size"] - BITMAP_INFO_HEADER_SIZE) * 8 - (
+                icon_header["square"]
+            ) // icon_header["square"]
 
             self.entry.append(icon_header)