diff --git a/erpnext/manufacturing/doctype/work_order/work_order.py b/erpnext/manufacturing/doctype/work_order/work_order.py
index 4f2989e57e8c1bafbac85b7d950e6628570e4434..f7ecee7efbd22f6cf3fec052618791338295e4b8 100644
--- a/erpnext/manufacturing/doctype/work_order/work_order.py
+++ b/erpnext/manufacturing/doctype/work_order/work_order.py
@@ -1437,14 +1437,14 @@ def get_serial_nos_for_work_order(work_order, production_item):
 
 
 def validate_operation_data(row):
-	if row.get("qty") <= 0:
+	if flt(row.get("qty")) <= 0:
 		frappe.throw(
 			_("Quantity to Manufacture can not be zero for the operation {0}").format(
 				frappe.bold(row.get("operation"))
 			)
 		)
 
-	if row.get("qty") > row.get("pending_qty"):
+	if flt(row.get("qty")) > flt(row.get("pending_qty")):
 		frappe.throw(
 			_("For operation {0}: Quantity ({1}) can not be greater than pending quantity({2})").format(
 				frappe.bold(row.get("operation")),