diff --git a/app/models/p_hire.rb b/app/models/p_hire.rb
index bab054f..50c5bcf 100644
--- a/app/models/p_hire.rb
+++ b/app/models/p_hire.rb
@@ -112,7 +112,7 @@ class PHire
           @end_date = re.end_time
           if @start_date < start_date
             if re.recurring_interval == "week"
-              @start_date += (start_date - @start_date).to_i / 7) * interval
+              @start_date += ((start_date - @start_date).to_i / 7) * interval
             else
               @start_date += ((start_date.year * 12 + start_date.month) - (@start_date.year * 12 + @start_date.month) - 1) * interval
             end