diff --git a/src/pretix/locale/de/wordlist.txt b/src/pretix/locale/de/wordlist.txt
index 97cfe0572..d2d7fc8a4 100644
--- a/src/pretix/locale/de/wordlist.txt
+++ b/src/pretix/locale/de/wordlist.txt
@@ -170,6 +170,7 @@ Play
 Plugin
 Plugins
 POS
+Postfix
 prefix
 pretix
 pretixdesk
diff --git a/src/pretix/locale/de_Informal/wordlist.txt b/src/pretix/locale/de_Informal/wordlist.txt
index 97cfe0572..d2d7fc8a4 100644
--- a/src/pretix/locale/de_Informal/wordlist.txt
+++ b/src/pretix/locale/de_Informal/wordlist.txt
@@ -170,6 +170,7 @@ Play
 Plugin
 Plugins
 POS
+Postfix
 prefix
 pretix
 pretixdesk
diff --git a/src/pretix/locale/wordlist.txt b/src/pretix/locale/wordlist.txt
index ed0d0bce0..47119ec11 100644
--- a/src/pretix/locale/wordlist.txt
+++ b/src/pretix/locale/wordlist.txt
@@ -65,6 +65,7 @@ PCI
 PDFs
 percentual
 POS
+postfix
 prepended
 presale
 pretix