diff --git a/ps5-mqtt/server/src/psn-account.ts b/ps5-mqtt/server/src/psn-account.ts
index 87de64b..277ff96 100644
--- a/ps5-mqtt/server/src/psn-account.ts
+++ b/ps5-mqtt/server/src/psn-account.ts
@@ -10,7 +10,18 @@ export module PsnAccount {
         titleImage: string;
         titleName: string;
 
+        /**
+         * Type of device the title was created for.
+         *
+         * @type {NormalizedDeviceType}
+         */
         platform: NormalizedDeviceType;
+
+        /**
+         * Type of device the title is being used on.
+         *
+         * @type {NormalizedDeviceType}
+         */
         launchPlatform: NormalizedDeviceType;
     }
 
diff --git a/ps5-mqtt/server/src/redux/sagas/update-account.ts b/ps5-mqtt/server/src/redux/sagas/update-account.ts
index c748a6e..d76dd7e 100644
--- a/ps5-mqtt/server/src/redux/sagas/update-account.ts
+++ b/ps5-mqtt/server/src/redux/sagas/update-account.ts
@@ -16,7 +16,7 @@ function* updateAccount({ payload: account }: UpdateAccountAction) {
             clonedDeviceState.activity?.activePlayers.some(p => p === account.accountName);
 
         // the player is using an app that matches the current device's platform
-        if (account.activity !== undefined && clonedDeviceState.type === account.activity.platform) {
+        if (account.activity !== undefined && clonedDeviceState.type === account.activity.launchPlatform) {
             // mark activity as the new activity, extending player list in the process
             clonedDeviceState.activity = {
                 ...account.activity,