lib/maintain/bitmask_value.rb in maintain-0.2.4 vs lib/maintain/bitmask_value.rb in maintain-0.2.5

@@ -10,10 +10,10 @@
       @value = bitmask_for(value)
     end
 
     protected
     def bitmask_for(states)
-      Array(states).compact.map{|value| value_for(value) }.sort.inject(0) {|total, mask| total | mask.to_i }
+      Array(states).compact.map{|value| value_for(value) }.compact.sort.inject(0) {|total, mask| total | mask.to_i }
     end
 
     def compare_value
       @value ||= 0
     end
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