diff --git a/stock/doctype/serial_no/serial_no.py b/stock/doctype/serial_no/serial_no.py
index 501b535c6e..09181db0d2 100644
--- a/stock/doctype/serial_no/serial_no.py
+++ b/stock/doctype/serial_no/serial_no.py
@@ -142,7 +142,8 @@ class DocType(StockController):
 		gl_entries = self.get_gl_entries_for_stock(against_stock_account, self.doc.purchase_rate)
 		
 		for entry in gl_entries:
-			entry["posting_date"] = self.doc.purchase_date
+			entry["posting_date"] = self.doc.purchase_date or (self.doc.creation and 
+				self.doc.creation.split(' ')[0]) or nowdate()
 			
 		if gl_entries:
 			make_gl_entries(gl_entries, cancel)
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