diff --git a/kafka-resources/base/kafka-core/kafka-persistent-cluster.yaml b/kafka-resources/base/kafka-core/kafka-persistent-cluster.yaml
index cb5f7ba..3042fe6 100644
--- a/kafka-resources/base/kafka-core/kafka-persistent-cluster.yaml
+++ b/kafka-resources/base/kafka-core/kafka-persistent-cluster.yaml
@@ -34,7 +34,7 @@ spec:
           nodePort: 32700
     config:
       # max.request.size: x
-      message.max.bytes: 2147483648
+      message.max.bytes: 1073741824
       offsets.topic.replication.factor: 1
       transaction.state.log.replication.factor: 1
       transaction.state.log.min.isr: 1