diff --git a/lib/gollum/frontend/views/history.rb b/lib/gollum/frontend/views/history.rb
index 90b8a170..9cb8ce97 100644
--- a/lib/gollum/frontend/views/history.rb
+++ b/lib/gollum/frontend/views/history.rb
@@ -27,7 +27,7 @@ module Precious
       end
 
       def _identicon_code(blob)
-        sha_bytes = Digest::SHA1.hexdigest(blob + @request.host)[0,20]
+        sha_bytes = Digest::SHA1.hexdigest(blob + @request.host)[0,20].unpack('C*')
         # Thanks donpark's IdenticonUtil.java for this.
         return  ((sha_bytes[0] & 0xFF) << 24) |
                 ((sha_bytes[1] & 0xFF) << 16) |