diff --git a/dcc/thumb.py b/dcc/thumb.py
index 9ff3b07..a1afa95 100644
--- a/dcc/thumb.py
+++ b/dcc/thumb.py
@@ -3,28 +3,34 @@ import dcc.doom_base
 import wand.color
 import wand.image
 
+
 class Thumb(dcc.doom_base.WadMap):
-	def get_parser(self, prog_name):
-		parser = super().get_parser(prog_name)
-		parser.add_argument("--index", action="store_true")
-		return parser
-	
-	def take_action(self, parsed_args):
-		base = self.base_thumb_path()
-		text = self.text_thumb_path()
-		mdoom = self.m_doom_path()
-		with wand.image.Image(filename=base) as bi, wand.color.Color("transparent") as tc:
-			with wand.image.Image(filename=text) as ti:
-				ti.border(tc, 5, 5)
-				bi.composite(ti, gravity="south_west")
+    def get_parser(self, prog_name):
+        parser = super().get_parser(prog_name)
+        parser.add_argument("--index", action="store_true")
+        return parser
 
-			with wand.image.Image(filename=mdoom) as mdi:
-				mdi.border(tc, 5, 5)
-				bi.composite(mdi, gravity="north_west")
+    def take_action(self, parsed_args):
+        base = self.base_thumb_path()
+        text = self.text_thumb_path()
+        mdoom = self.m_doom_path()
+        with (
+            wand.image.Image(filename=base) as bi,
+            wand.color.Color("transparent") as tc
+        ):
+            with wand.image.Image(filename=text) as ti:
+                ti.border(tc, 5, 5)
+                bi.composite(ti, gravity="south_west")
 
-			if parsed_args.index:
-				with wand.image.Image(filename=self.output.joinpath("doomed_index.png")) as di:
-					di.border(tc, 1, 1)
-					bi.composite(di, gravity="north_east")
+            with wand.image.Image(filename=mdoom) as mdi:
+                mdi.border(tc, 5, 5)
+                bi.composite(mdi, gravity="north_west")
 
-			bi.save(filename=self.thumb_path())
+            if parsed_args.index:
+                with wand.image.Image(
+                    filename=self.output.joinpath("doomed_index.png")
+                ) as di:
+                    di.border(tc, 1, 1)
+                    bi.composite(di, gravity="north_east")
+
+            bi.save(filename=self.thumb_path())