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-rw-r--r--lib/paperclip/color_extractor.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/paperclip/color_extractor.rb b/lib/paperclip/color_extractor.rb
index 733dcba80..2e8dc04fd 100644
--- a/lib/paperclip/color_extractor.rb
+++ b/lib/paperclip/color_extractor.rb
@@ -183,7 +183,7 @@ module Paperclip
     end
 
     def rgb_to_hex(rgb)
-      '#%02x%02x%02x' % [rgb.r, rgb.g, rgb.b]
+      format('#%02x%02x%02x', rgb.r, rgb.g, rgb.b)
     end
   end
 end