diff --git a/src/02_build_kernel.sh b/src/02_build_kernel.sh
index a9bda637e..746502441 100755
--- a/src/02_build_kernel.sh
+++ b/src/02_build_kernel.sh
@@ -44,14 +44,17 @@ else
   echo "CONFIG_OVERLAY_FS_INDEX=y" >> .config
 
   # Follow redirects even if redirects are turned off (4.15+).
-  echo "# CONFIG_OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW is not set" >> .config
+  echo "CONFIG_OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW=y" >> .config
 
   # Turn on NFS export feature by default (4.16+).
-  echo "# CONFIG_OVERLAY_FS_NFS_EXPORT is not set" >> .config
+  echo "CONFIG_OVERLAY_FS_NFS_EXPORT=y" >> .config
 
   # Auto enable inode number mapping (4.17+).
   echo "CONFIG_OVERLAY_FS_XINO_AUTO=y" >> .config
 
+  # Тurn on metadata only copy up feature by default (4.19+).
+  echo "CONFIG_OVERLAY_FS_METACOPY=y" >> .config
+
   # Step 1 - disable all active kernel compression options (should be only one).
   sed -i "s/.*\\(CONFIG_KERNEL_.*\\)=y/\\#\\ \\1 is not set/" .config