diff --git a/erpnext/regional/report/gstr_1/gstr_1.py b/erpnext/regional/report/gstr_1/gstr_1.py
index 80e2d72..1096159 100644
--- a/erpnext/regional/report/gstr_1/gstr_1.py
+++ b/erpnext/regional/report/gstr_1/gstr_1.py
@@ -201,7 +201,7 @@
 		elif self.filters.get("type_of_business") ==  "EXPORT":
 			conditions += """ AND is_return !=1 and gst_category = 'Overseas' """
 
-		conditions += " AND billing_address_gstin NOT IN %(company_gstins)s"
+		conditions += " AND IFNULL(billing_address_gstin, '') NOT IN %(company_gstins)s"
 
 		return conditions