From e1215a3e22ce14f9a73b15c6ed24fdce11f928a9 Mon Sep 17 00:00:00 2001
From: Mark Wells <mark@freeside.biz>
Date: Fri, 22 Apr 2016 10:21:22 -0700
Subject: [PATCH] fix apportionment of flat fees on zero-charge invoices,
 #39816

---
 FS/FS/part_fee.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/FS/FS/part_fee.pm b/FS/FS/part_fee.pm
index 0ca52a096..1d4682c1e 100644
--- a/FS/FS/part_fee.pm
+++ b/FS/FS/part_fee.pm
@@ -402,7 +402,8 @@ sub lineitem {
 
   # if this is a percentage fee and has line item fractions,
   # adjust them to be proportional and to add up correctly.
-  if ( @item_base ) {
+  # don't try this if we're charging on a zero-amount set of line items.
+  if ( scalar(@item_base) > 0 and $total_base > 0 ) {
     my $cents = $amount * 100;
     # not necessarily the same as percent
     my $multiplier = $amount / $total_base;
-- 
2.11.0