diff --git a/erpnext/crm/doctype/appointment_booking_settings/appointment_booking_settings.py b/erpnext/crm/doctype/appointment_booking_settings/appointment_booking_settings.py
index 2aa51caefdd..bb45b7222b4 100644
--- a/erpnext/crm/doctype/appointment_booking_settings/appointment_booking_settings.py
+++ b/erpnext/crm/doctype/appointment_booking_settings/appointment_booking_settings.py
@@ -23,12 +23,12 @@ class AppointmentBookingSettings(Document):
             to_time = datetime.datetime.strptime(
                 self.min_date+record.to_time, self.format_string)
             timedelta = to_time-from_time
-            self.from_time_is_later_than_to_time(from_time, to_time)
+            self.validate_from_and_to_time(from_time, to_time)
             self.duration_is_divisible(from_time, to_time)
 
-    def from_time_is_later_than_to_time(self, from_time, to_time):
+    def validate_from_and_to_time(self, from_time, to_time):
         if from_time > to_time:
-            err_msg = 'From Time cannot be later than To Time for '+record.day_of_week
+            err_msg = _(''<b>From Time</b> cannot be later than <b>To Time</b> for {0}'').format(record.day_of_week)
             frappe.throw(_(err_msg))
 
     def duration_is_divisible(self, from_time, to_time):