diff --git a/lib/validates_timeliness/extensions/date_time_select.rb b/lib/validates_timeliness/extensions/date_time_select.rb
index b822f1e..5906593 100644
--- a/lib/validates_timeliness/extensions/date_time_select.rb
+++ b/lib/validates_timeliness/extensions/date_time_select.rb
@@ -56,7 +56,7 @@ module ValidatesTimeliness
           values = [nil] * 6
           pairs.map do |(param, value)|
             position = param.scan(/\(([0-9]*).*\)/).first.first
-            values[position.to_i-1] = value
+            values[position.to_i-1] = value.to_i
           end
 
           TimelinessDateTime.new(*values)