diff --git a/Test/Tests/RealtimeClientConnectionTests.swift b/Test/Tests/RealtimeClientConnectionTests.swift
index 8b4898cb1..30ec3cc8d 100644
--- a/Test/Tests/RealtimeClientConnectionTests.swift
+++ b/Test/Tests/RealtimeClientConnectionTests.swift
@@ -4132,7 +4132,8 @@ class RealtimeClientConnectionTests: XCTestCase {
                 guard let error = stateChange.reason else {
                     fail("Error is nil"); done(); return
                 }
-                XCTAssertTrue(error.code == ARTErrorCode.invalidCredential.rawValue)
+                // This is because, at time of writing, the production environment is handling connections using both frontend (which returns invalidCredential) and frontdoor (which returns invalidCredentials). So we need to handle both cases at least for now (unlike other tests, which use sandbox which is 100% using frontdoor).
+                XCTAssertTrue(error.code == ARTErrorCode.invalidCredential.rawValue || error.code == ARTErrorCode.invalidCredentials.rawValue)
                 done()
             }
         }