diff --git a/import2ledger/importers/nbpy2017.py b/import2ledger/importers/nbpy2017.py
index 71686f4..f861d2f 100644
--- a/import2ledger/importers/nbpy2017.py
+++ b/import2ledger/importers/nbpy2017.py
@@ -89,10 +89,12 @@ class Invoice2017:
             if description.startswith('Ticket - '):
                 if total > 0:
                     self.tickets_sold += int(qty)
-            elif description.startswith('T-Shirt - '):
-                self.shirts_sold += int(qty)
             elif description.startswith('Early Bird ('):
                 self.ticket_rate = self.DISCOUNT_TICKET_RBI
+            elif description.startswith('T-Shirt - '):
+                self.shirts_sold += int(qty)
+            elif description.startswith('T-shirts complimentary '):
+                self.shirts_sold -= int(qty)
 
     def _read_invoice_activity(self, table, first_row_text, rows_text):
         self.actions = [{
diff --git a/tests/data/nbpy2017c.html b/tests/data/nbpy2017c.html
index 1c9446b..4c54102 100644
--- a/tests/data/nbpy2017c.html
+++ b/tests/data/nbpy2017c.html
@@ -179,9 +179,9 @@
           </tr>
           <tr>
             <td>T-Shirt - Men&#39;s/Straight Cut Size M</td>
-            <td class="text-right">2</td>
+            <td class="text-right">3</td>
             <td class="text-right">$30.00</td>
-            <td class="text-right">$60.00</td>
+            <td class="text-right">$90.00</td>
           </tr>
           <tr>
             <td>Tutorials - Notify me when tutorials are open</td>
@@ -189,6 +189,12 @@
             <td class="text-right">$-0.00</td>
             <td class="text-right">$-0.00</td>
           </tr>
+          <tr>
+            <td>T-shirts complimentary for staff and volunteers (T-Shirt - Men&#39;s/Straight Cut Size M)</td>
+            <td class="text-right">1</td>
+            <td class="text-right">$-30.00</td>
+            <td class="text-right">$-30.00</td>
+          </tr>
         <tr>
           <th colspan="3">TOTAL</th>
           <td class="text-right">$60.00</td>