diff --git a/Tests/test_file_gimppalette.py b/Tests/test_file_gimppalette.py
index 9ecce801e..4d82ab893 100644
--- a/Tests/test_file_gimppalette.py
+++ b/Tests/test_file_gimppalette.py
@@ -51,7 +51,7 @@ def test_palette__has_correct_color_indexes():
     ]
 
     for i, color in enumerate(colors_in_test_palette):
-        assert tuple(palette[i * 3: i * 3 + 3]) == color
+        assert tuple(palette[i * 3 : i * 3 + 3]) == color
 
 
 def test_palette_counts_number_of_colors_in_file():
diff --git a/src/PIL/GimpPaletteFile.py b/src/PIL/GimpPaletteFile.py
index d26a229a8..87b12a2ab 100644
--- a/src/PIL/GimpPaletteFile.py
+++ b/src/PIL/GimpPaletteFile.py
@@ -45,13 +45,12 @@ class GimpPaletteFile:
             if len(v) < 3:
                 raise ValueError("bad palette entry")
 
-            palette[index * 3: index * 3 + 3] = v
+            palette[index * 3 : index * 3 + 3] = v
             index += 1
 
         self.palette = bytes(palette)
         self.n_colors = index
 
-
     def getpalette(self):
 
         return self.palette, self.rawmode