diff --git a/erpnext/manufacturing/doctype/work_order/work_order.py b/erpnext/manufacturing/doctype/work_order/work_order.py
index aa7bc5b..39beb36 100644
--- a/erpnext/manufacturing/doctype/work_order/work_order.py
+++ b/erpnext/manufacturing/doctype/work_order/work_order.py
@@ -1511,14 +1511,14 @@
 
 
 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")),