diff --git a/binding/java/src/main/java/org/lionsoul/ip2region/service/ConfigBuilder.java b/binding/java/src/main/java/org/lionsoul/ip2region/service/ConfigBuilder.java
index 53fca20..2f52c51 100644
--- a/binding/java/src/main/java/org/lionsoul/ip2region/service/ConfigBuilder.java
+++ b/binding/java/src/main/java/org/lionsoul/ip2region/service/ConfigBuilder.java
@@ -32,7 +32,7 @@ public class ConfigBuilder {
     private InputStream xdbInputStream = null;
 
     // slice bytes for in-memory xdb content
-    private int cacheSliceBytes = Searcher.MAX_WRITE_BYTES;
+    private int cacheSliceBytes = Searcher.DEFAULT_SLICE_BYTES;
 
     // searchers
     private int searchers = 20;