diff --git a/grub-core/osdep/generic/blocklist.c b/grub-core/osdep/generic/blocklist.c
index 74024fd06..ea2a511b6 100644
--- a/grub-core/osdep/generic/blocklist.c
+++ b/grub-core/osdep/generic/blocklist.c
@@ -59,8 +59,7 @@ grub_install_get_blocklist (grub_device_t root_dev,
 
       grub_disk_cache_invalidate_all ();
 
-      grub_file_filter_disable_compression ();
-      file = grub_file_open (core_path_dev);
+      file = grub_file_open (core_path_dev, GRUB_FILE_TYPE_NONE | FILE_TYPE_NO_DECOMPRESS);
       if (file)
 	{
 	  if (grub_file_size (file) != core_size)
@@ -117,8 +116,7 @@ grub_install_get_blocklist (grub_device_t root_dev,
 
   grub_file_t file;
   /* Now read the core image to determine where the sectors are.  */
-  grub_file_filter_disable_compression ();
-  file = grub_file_open (core_path_dev);
+  file = grub_file_open (core_path_dev, GRUB_FILE_TYPE_NONE | FILE_TYPE_NO_DECOMPRESS);
   if (! file)
     grub_util_error ("%s", grub_errmsg);