diff --git a/src/locales/en/trainer-names.json b/src/locales/en/trainer-names.json
index 1d51b48d43f..5a9db128e2f 100644
--- a/src/locales/en/trainer-names.json
+++ b/src/locales/en/trainer-names.json
@@ -155,7 +155,7 @@
   "lusamine": "Lusamine",
   "guzma": "Guzma",
   "rose": "Rose",
-  "cassiopeia": "Cassiopeia",
+  "cassiopeia": "Penny",
 
   "blue_red_double": "Blue & Red",
   "red_blue_double": "Red & Blue",