diff --git a/src/kv_fdw.h b/src/kv_fdw.h
index c189c75..89d9087 100644
--- a/src/kv_fdw.h
+++ b/src/kv_fdw.h
@@ -49,7 +49,7 @@
 
 #define COLUMNSTORE "column"
 
-#define BATCHCAPACITY 8*1024*1024*1024
+#define BATCHCAPACITY 8*1024*1024
 
 #define RANGEQUERYFILE "/KVRangeQuery"
 #endif