diff --git a/healthcare/healthcare/doctype/nursing_task/nursing_task.py b/healthcare/healthcare/doctype/nursing_task/nursing_task.py
index 769e55d9b5..01d10625cf 100644
--- a/healthcare/healthcare/doctype/nursing_task/nursing_task.py
+++ b/healthcare/healthcare/doctype/nursing_task/nursing_task.py
@@ -60,7 +60,9 @@ def set_task_schedule(self):
 
 		if not self.requested_end_time:
 			if not self.duration:
-				self.duration = frappe.db.get_value("Healthcare Activity", self.activity, "duration")
+				self.duration = (
+					frappe.db.get_value("Healthcare Activity", self.activity, "activity_duration") or 0
+				)
 			self.requested_end_time = add_to_date(self.requested_start_time, seconds=self.duration)
 
 		# set date based on requested_start_time