diff --git a/lib/src/messages/responses/responses_base.dart b/lib/src/messages/responses/responses_base.dart
index 1612b2e..35fda64 100644
--- a/lib/src/messages/responses/responses_base.dart
+++ b/lib/src/messages/responses/responses_base.dart
@@ -1,6 +1,12 @@
 import '../../errors/errors.dart';
 
-class ErrorResponseBase extends AbstractExceptionResponseBase {
+class ErrorResponseBase extends AbstractExceptionResponseBase
+    implements Exception {
   ErrorResponseBase(SdkException exception)
       : super(exception.message, exception.errorCode, exception.innerException);
+
+  @override
+  String toString() {
+    return "[${super.errorCode}] ${super.message}";
+  }
 }
diff --git a/test/src/cache/topics_test.dart b/test/src/cache/topics_test.dart
index d9f582c..7002e6f 100644
--- a/test/src/cache/topics_test.dart
+++ b/test/src/cache/topics_test.dart
@@ -79,7 +79,7 @@ void main() {
               'Expected Success but got Error: ${subscribeResp.errorCode} ${subscribeResp.message}');
       }
 
-      sleep(Duration(seconds: 1));
+      sleep(Duration(seconds: 5));
       final publishResp = await topicClient.publish(
           integrationTestCacheName, topicName, StringValue(topicValue));
       switch (publishResp) {
@@ -90,7 +90,7 @@ void main() {
           fail(
               'Expected Success but got Error: ${publishResp.errorCode} ${publishResp.message}');
       }
-      sleep(Duration(seconds: 1));
+      sleep(Duration(seconds: 5));
 
       try {
         await for (final msg in subscribeResp.stream) {