diff --git a/app.rb b/app.rb
index 39d7090..21e65f5 100644
--- a/app.rb
+++ b/app.rb
@@ -74,7 +74,7 @@ def readable_number(value)
   numbers.each do |number, symbol|
     if value.to_f / number.to_f > 1
       new_value = '-' if negative
-      new_value += sprintf('%.2f', value.to_f / number.to_f) + '<strong>' + symbol + '</strong>'
+      new_value = new_value + sprintf('%.2f', value.to_f / number.to_f) + '<strong>' + symbol + '</strong>'
       return new_value
     end
   end