diff --git a/lib/letter_avatar.rb b/lib/letter_avatar.rb
index e912080..af17d2e 100644
--- a/lib/letter_avatar.rb
+++ b/lib/letter_avatar.rb
@@ -25,7 +25,6 @@ module LetterAvatar
         -gravity center
         -thumbnail #{width}x#{height}^
         -extent #{width}x#{height}
-        -interpolate bicubic
         -unsharp 2x0.5+0.7+0
         -quality 98
         #{to}
--
libgit2 0.21.0