diff --git a/india_compliance/gst_india/report/gstr_3b_details/gstr_3b_details.py b/india_compliance/gst_india/report/gstr_3b_details/gstr_3b_details.py
index 38ef38f98..dfa37083c 100644
--- a/india_compliance/gst_india/report/gstr_3b_details/gstr_3b_details.py
+++ b/india_compliance/gst_india/report/gstr_3b_details/gstr_3b_details.py
@@ -288,10 +288,14 @@ def get_data(self):
         for invoice in invoices:
             place_of_supply = cint(invoice.place_of_supply[0:2]) or state
 
+            nature_of_supply = ""
+
             if invoice.gst_category == "Registered Composition":
                 supplier_state = cint(invoice.supplier_gstin[0:2])
             else:
-                cint(address_state_map.get(invoice.supplier_address)) or state
+                supplier_state = (
+                    cint(address_state_map.get(invoice.supplier_address)) or state
+                )
 
             intra, inter = 0, 0
             base_amount = invoice.base_amount