refactor: unnecessary joining of lists
diff --git a/erpnext/accounts/report/general_ledger/general_ledger.py b/erpnext/accounts/report/general_ledger/general_ledger.py
index 385c8b2..7303bf5 100644
--- a/erpnext/accounts/report/general_ledger/general_ledger.py
+++ b/erpnext/accounts/report/general_ledger/general_ledger.py
@@ -547,10 +547,7 @@
 			"fieldname": "balance",
 			"fieldtype": "Float",
 			"width": 130
-		}
-	]
-
-	columns.extend([
+		},
 		{
 			"label": _("Voucher Type"),
 			"fieldname": "voucher_type",
@@ -584,7 +581,7 @@
 			"fieldname": "project",
 			"width": 100
 		}
-	])
+	]
 
 	if filters.get("include_dimensions"):
 		for dim in get_accounting_dimensions(as_list = False):