diff --git a/photologue_custom/management/commands/duplicate.py b/photologue_custom/management/commands/duplicate.py
index 93a9150..e3bd130 100644
--- a/photologue_custom/management/commands/duplicate.py
+++ b/photologue_custom/management/commands/duplicate.py
@@ -30,12 +30,12 @@ class Command(BaseCommand):
         # Find duplicates in all galleries
         for gallery in galleries:
             duplicates = find_duplicate(gallery)
-            self.stdout.write('Gallery {} :'.format(gallery.slug))
-            for (original, copies) in duplicates:
-                self.stdout.write(
-                    '  {} has following duplicate(s) :'.format(original.slug))
+            self.stdout.write(f"Gallery {gallery.slug}:")
+            for original, copies in duplicates:
+                self.stdout.write(f"  {original.slug} is duplicated:", ending='')
                 for copy in copies:
-                    self.stdout.write('    {}'.format(copy.slug))
+                    self.stdout.write(f" {copy.slug}")
+
             # Delete them if --delete
             if options['delete']:
                 self.stdout.write(