diff --git a/java/src/main/java/org/rocksdb/MutableColumnFamilyOptionsInterface.java b/java/src/main/java/org/rocksdb/MutableColumnFamilyOptionsInterface.java
index 4f4749646..4ae96daaf 100644
--- a/java/src/main/java/org/rocksdb/MutableColumnFamilyOptionsInterface.java
+++ b/java/src/main/java/org/rocksdb/MutableColumnFamilyOptionsInterface.java
@@ -21,7 +21,7 @@ public interface MutableColumnFamilyOptionsInterface
    * Also, a larger write buffer will result in a longer recovery time
    * the next time the database is opened.
    *
-   * Default: 4MB
+   * Default: 64MB
    * @param writeBufferSize the size of write buffer.
    * @return the instance of the current object.
    * @throws java.lang.IllegalArgumentException thrown on 32-Bit platforms