diff --git a/tune/convert-bgt.c b/tune/convert-bgt.c
index 77cba3930ae1..196e0f81a176 100644
--- a/tune/convert-bgt.c
+++ b/tune/convert-bgt.c
@@ -28,7 +28,7 @@
 #include "tune/tune.h"
 
 /* After this many block groups we need to commit transaction. */
-#define BLOCK_GROUP_BATCH	64
+#define BLOCK_GROUP_BATCH	4
 
 int convert_to_bg_tree(struct btrfs_fs_info *fs_info)
 {