diff --git a/accounts/doctype/sales_invoice/sales_invoice.py b/accounts/doctype/sales_invoice/sales_invoice.py
index a146e932ef..ef6f66ceec 100644
--- a/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/accounts/doctype/sales_invoice/sales_invoice.py
@@ -719,7 +719,7 @@ def get_next_date(dt, mcount, day=None):
 	if not day:
 		day = getdate(dt).day
 	if month > 12:
-		month, year = m-12, y+1
+		month, year = month-12, year+1
 	try:
 		next_month_date = datetime.date(year, month, day)
 	except:
@@ -909,4 +909,4 @@ def get_bank_cash_account(mode_of_payment):
 		webnotes.msgprint("Default Bank / Cash Account not set in Mode of Payment: %s. Please add a Default Account in Mode of Payment master." % mode_of_payment)
 	return {
 		"cash_bank_account": val
-	}
\ No newline at end of file
+	}
diff --git a/public/js/startup.js b/public/js/startup.js
index 10c9791956..cff3ed8dab 100644
--- a/public/js/startup.js
+++ b/public/js/startup.js
@@ -57,17 +57,18 @@ erpnext.startup.start = function() {
 			var today = dateutil.str_to_obj(wn.boot.server_date);
 			var expires_on = dateutil.str_to_obj(wn.boot.expires_on);
 			var diff = dateutil.get_diff(expires_on, today);
+			var payment_link = "<a href=\"https://erpnext.com/modes-of-payment.html\" target=\"_blank\">See Payment Options.</a>";		
 			if (0 <= diff && diff <= 15) {
 				var expiry_string = diff==0 ? "today" : repl("in %(diff)s day(s)", { diff: diff });
 				$('header').append(repl('<div class="expiry-info"> \
 					Your ERPNext subscription will <b>expire %(expiry_string)s</b>. \
 					Please renew your subscription to continue using ERPNext \
-					(and remove this annoying banner). \
-				</div>', { expiry_string: expiry_string }));
+					(and remove this annoying banner). %(payment_link)s\
+				</div>', { expiry_string: expiry_string, payment_link: payment_link }));
 			} else if (diff < 0) {
 				$('header').append(repl('<div class="expiry-info"> \
-					This ERPNext subscription <b>has expired</b>. \
-				</div>', { expiry_string: expiry_string }));
+					This ERPNext subscription <b>has expired</b>. %(payment_link)s\
+				</div>', { expiry_string: expiry_string, payment_link: payment_link }));
 			}
 		}
 		erpnext.set_about();
@@ -162,4 +163,4 @@ erpnext.setup_mousetrap = function() {
 // start
 $(document).bind('startup', function() {
 	erpnext.startup.start();
-});
\ No newline at end of file
+});