diff --git a/src/controllers/api/loginController.ts b/src/controllers/api/loginController.ts
index 97c97e0c..8f368a67 100644
--- a/src/controllers/api/loginController.ts
+++ b/src/controllers/api/loginController.ts
@@ -107,10 +107,13 @@ const createLoginResponse = (myAddress: string, account: IDatabaseAccountJson, b
         AmazonAuthToken: account.AmazonAuthToken,
         AmazonRefreshToken: account.AmazonRefreshToken,
         Nonce: account.Nonce,
-        IRC: config.myIrcAddresses ?? [myAddress],
         NRS: config.NRS,
         BuildLabel: buildLabel
     };
+    if (version_compare(buildLabel, "2015.05.14.16.29") >= 0) {
+        // U17 and up
+        resp.IRC = config.myIrcAddresses ?? [myAddress];
+    }
     if (version_compare(buildLabel, "2018.11.08.14.45") >= 0) {
         // U24 and up
         resp.ConsentNeeded = account.ConsentNeeded;
diff --git a/src/types/loginTypes.ts b/src/types/loginTypes.ts
index 5fcb0e53..5a7f9e46 100644
--- a/src/types/loginTypes.ts
+++ b/src/types/loginTypes.ts
@@ -51,7 +51,7 @@ export interface ILoginResponse extends IAccountAndLoginResponseCommons {
     platformCDNs?: string[];
     NRS?: string[];
     DTLS?: number;
-    IRC: string[];
+    IRC?: string[];
     HUB?: string;
 }