diff --git a/dcc/__main__.py b/dcc/__main__.py
index 6383388..dbb5b19 100644
--- a/dcc/__main__.py
+++ b/dcc/__main__.py
@@ -2,4 +2,4 @@ import sys
 from dcc.main import main
 
 if __name__ == '__main__':
-	sys.exit(main(sys.argv[1:]))
+    sys.exit(main(sys.argv[1:]))
diff --git a/dcc/concat.py b/dcc/concat.py
index 1f28199..33a3a8b 100644
--- a/dcc/concat.py
+++ b/dcc/concat.py
@@ -61,7 +61,7 @@ class Concat(dcc.doom_base.Wad):
         output.close()
 
         for line in summary:
-            summary_file.write(f"{line}\n") 
+            summary_file.write(f"{line}\n")
         summary_file.close()
 
     def _add_chunk(self, v, output, overlay):