diff --git a/app/models/property.rb b/app/models/property.rb
index 83da4da..d027357 100644
--- a/app/models/property.rb
+++ b/app/models/property.rb
@@ -109,7 +109,7 @@ class Property
           b_sdata = booking.start_time.wday*10000 + booking.start_time.hour*100 + booking.start_time.minute
           b_edata = booking.end_time.wday*10000 + booking.end_time.hour*100 + booking.end_time.minute
         end
-        while True:
+        while true
           if b_interval == 'month'
             sdata = stime.day*10000 + stime.hour*100 + stime.minute
             edata = etime.day*10000 + etime.hour*100 + etime.minute