diff --git a/lib/domains/de/theresianum-mainz.txt b/lib/domains/de/theresianum-mainz.txt
new file mode 100644
index 0000000000..57f25a9b29
--- /dev/null
+++ b/lib/domains/de/theresianum-mainz.txt
@@ -0,0 +1 @@
+Gymnasium Theresianum Mainz
\ No newline at end of file