lib/runby_pace/pace.rb in runby_pace-0.6.144 vs lib/runby_pace/pace.rb in runby_pace-0.6.145

@@ -16,9 +16,10 @@
       when String
         init_from_string time_or_pace, distance
       else
         raise 'Invalid Time or Pace'
       end
+      freeze
     end
 
     def convert_to(target_distance)
       target_distance = Distance.new(target_distance) unless target_distance.is_a?(Distance)
       return self if @distance == target_distance