=== vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/processors/mini_magick_processor.rb
==================================================================
--- vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/processors/mini_magick_processor.rb  (revision 12426)
+++ vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/processors/mini_magick_processor.rb  (local)
@@ -41,7 +41,7 @@
           if size.is_a?(Fixnum) || (size.is_a?(Array) && size.first.is_a?(Fixnum))
             if size.is_a?(Fixnum)
               size = [size, size]
-              img.resize(size.join('x'))
+              size[0] == size[1] ? img.crop("#{size[0]}x#{size[1]}+0+0\" -gravity \"Center") : img.resize(size.join('x'))
             else
               img.resize(size.join('x') + '!')
             end