diff --git a/PIL/BmpImagePlugin.py b/PIL/BmpImagePlugin.py
index 9a297b3b8..b109d2696 100644
--- a/PIL/BmpImagePlugin.py
+++ b/PIL/BmpImagePlugin.py
@@ -103,7 +103,9 @@ class BmpImageFile(ImageFile.ImageFile):
                 file_info['pixels_per_meter'] = (i32(header_data[20:24]), i32(header_data[24:28]))
                 file_info['colors'] = i32(header_data[28:32])
                 file_info['palette_padding'] = 4
-                self.info["dpi"] = tuple(map(lambda x: int(math.ceil(x / 39.3701)), file_info['pixels_per_meter']))
+                self.info["dpi"] = tuple(
+                    map(lambda x: int(math.ceil(x / 39.3701)),
+                        file_info['pixels_per_meter']))
                 if file_info['compression'] == self.BITFIELDS:
                     if len(header_data) >= 52:
                         for idx, mask in enumerate(['r_mask', 'g_mask', 'b_mask', 'a_mask']):