diff --git a/patches/patch.py b/patches/patch.py
index fb26ecd..9417ea2 100644
--- a/patches/patch.py
+++ b/patches/patch.py
@@ -1,7 +1,7 @@
 # REMEMBER to update this
 # ========================
 
-last_patch = 347
+last_patch = 348
 #-------------------------------------------
 
 def execute(patch_no):
@@ -258,3 +258,5 @@
 		reload_doc('core', 'doctype', 'profile')
 	elif patch_no == 347:
 		sql("delete from `tabField Mapper Detail` where from_field = to_field and map = 'Yes' and ifnull(checking_operator, '') = ''")
+	elif patch_no == 348:
+		sql("update `tabStock Ledger Entry` set is_cancelled = 'No' where voucher_type = 'Serial No'")
diff --git a/stock/doctype/serial_no/serial_no.py b/stock/doctype/serial_no/serial_no.py
index 02ce0f8..b242edb 100644
--- a/stock/doctype/serial_no/serial_no.py
+++ b/stock/doctype/serial_no/serial_no.py
@@ -75,7 +75,7 @@
 			'incoming_rate'			: self.doc.purchase_rate,
 			'company'				: self.doc.company,
 			'fiscal_year'			: self.doc.fiscal_year,
-			'is_cancelled'			: 'No',
+			'is_cancelled'			: 'No', # is_cancelled is always 'No' because while deleted it can not find creation entry if it not created directly, voucher no != serial no.
 			'batch_no'				: '',
 			'serial_no'				: self.doc.name
 		}]