diff --git a/src/setup.cfg b/src/setup.cfg
index 370e5d13ea..084e05327a 100644
--- a/src/setup.cfg
+++ b/src/setup.cfg
@@ -61,6 +61,7 @@ edgecase_words =
     translate.pretix.eu
     4th
 	214th
+	INV
 phrases =
     ticketing powered by
     powered by