diff --git a/erpnext/manufacturing/doctype/job_card/job_card.py b/erpnext/manufacturing/doctype/job_card/job_card.py
index 8aa0ffd..92074c6 100644
--- a/erpnext/manufacturing/doctype/job_card/job_card.py
+++ b/erpnext/manufacturing/doctype/job_card/job_card.py
@@ -47,6 +47,8 @@
 				if d.completed_qty:
 					self.total_completed_qty += d.completed_qty
 
+			self.total_completed_qty = flt(self.total_completed_qty, self.precision("total_completed_qty"))
+
 	def get_overlap_for(self, args, check_next_available_slot=False):
 		production_capacity = 1