lib/usps.rb in tracking_number-0.3.1 vs lib/usps.rb in tracking_number-0.3.2

@@ -122,10 +122,10 @@
     def matches
       self.tracking_number.scan(VERIFY_PATTERN).flatten
     end
 
     def valid_checksum?
-      sequence = tracking_number.scan(/[0-9]+/).flatten.to_s
+      sequence = tracking_number.scan(/[0-9]+/).flatten.join
       chars = sequence.chars.to_a
       check_digit = chars.pop.to_i
       
       sum = 0
       chars.zip([8,6,4,2,3,5,9,7]).each do |pair|
\ No newline at end of file