diff --git a/app/models/property.rb b/app/models/property.rb
index d027357..cec836d 100644
--- a/app/models/property.rb
+++ b/app/models/property.rb
@@ -95,12 +95,14 @@ class Property
       case interval
       when 'week'
         d_step = 1.week
-      when 'day'
-        d_step = 1.day
+      when 'month'
+        d_step = 1.month
       else
         d_step = 0
       end
       bookings.each do |booking|
+        stime_tp = stime
+        etime_tp = etime
         b_interval = booking.recurring_interval
         if b_interval == 'month'
           b_sdata = booking.start_time.day*10000 + booking.start_time.hour*100 + booking.start_time.minute
@@ -111,18 +113,18 @@ class Property
         end
         while true
           if b_interval == 'month'
-            sdata = stime.day*10000 + stime.hour*100 + stime.minute
-            edata = etime.day*10000 + etime.hour*100 + etime.minute
+            sdata = stime_tp.day*10000 + stime_tp.hour*100 + stime_tp.minute
+            edata = etime_tp.day*10000 + etime_tp.hour*100 + etime_tp.minute
           elsif b_interval == 'week'
-            sdata = stime.wday*10000 + stime.hour*100 + stime.minute
-            edata = etime.wday*10000 + etime.hour*100 + etime.minute
+            sdata = stime_tp.wday*10000 + stime_tp.hour*100 + stime_tp.minute
+            edata = etime_tp.wday*10000 + etime_tp.hour*100 + etime_tp.minute
           end
           if (b_sdata <= sdata && b_edata >= sdata) || (b_sdata >= sdata && b_edata <= edata) || (b_sdata <= edata && b_edata >= edata)
             available = false
           end
-          stime = stime + d_step
-          etime = etime + d_step
-          break if recurring_end_date.nil? || recurring_end_date < stime
+          stime_tp = stime_tp + d_step
+          etime_tp = etime_tp + d_step
+          break if recurring_end_date.nil? || recurring_end_date < stime_tp
         end
         break if available == false
       end