diff --git a/README.md b/README.md
index a857a7799..1e9cece4d 100644
--- a/README.md
+++ b/README.md
@@ -261,7 +261,6 @@ support to GRUB2.
 * grub-core/kern/dl.c
 * grub-core/kern/i386/pc/tpm/tpm_kern.c
 * grub-core/kern/sha1.c
-* grub-core/kern/file.c
 * grub-core/disk/cryptodisk.c
 * grub-core/disk/luks.c
 * grub-core/loader/linux.c
@@ -276,7 +275,6 @@ support to GRUB2.
 * include/grub/i386/pc/tpm.h
 * include/grub/tpm.h
 * include/grub/sha1.h
-* include/grub/file.h
 * util/mkimage.c
 
 ## 3. Thanks
diff --git a/grub-core/kern/file.c b/grub-core/kern/file.c
index 47ca74aa7..668f8930b 100644
--- a/grub-core/kern/file.c
+++ b/grub-core/kern/file.c
@@ -143,78 +143,6 @@ grub_file_open (const char *name)
   return 0;
 }
 
-
-/* Begin TCG extension */
-grub_file_t
-grub_file_open_nofilter (const char *name)
-{
- grub_device_t device = 0;
-  grub_file_t file = 0;
-  char *device_name;
-  const char *file_name;
-
-  device_name = grub_file_get_device_name (name);
-  if (grub_errno)
-	goto fail;
-
-  /* Get the file part of NAME.  */
-  file_name = (name[0] == '(') ? grub_strchr (name, ')') : NULL;
-  if (file_name)
-	file_name++;
-  else
-	file_name = name;
-
-  device = grub_device_open (device_name);
-  grub_free (device_name);
-  if (! device)
-	goto fail;
-
-  file = (grub_file_t) grub_zalloc (sizeof (*file));
-  if (! file)
-	goto fail;
-
-  file->device = device;
-
-  /* In case of relative pathnames and non-Unix systems (like Windows)
-   * name of host files may not start with `/'. Blocklists for host files
-   * are meaningless as well (for a start, host disk does not allow any direct
-   * access - it is just a marker). So skip host disk in this case.
-   */
-  if (device->disk && file_name[0] != '/'
-#if defined(GRUB_UTIL) || defined(GRUB_MACHINE_EMU)
-	  && grub_strcmp (device->disk->name, "host")
-#endif
-	 )
-	/* This is a block list.  */
-	file->fs = &grub_fs_blocklist;
-  else
-	{
-	  file->fs = grub_fs_probe (device);
-	  if (! file->fs)
-	goto fail;
-	}
-
-  if ((file->fs->open) (file, file_name) != GRUB_ERR_NONE)
-	goto fail;
-
-  file->name = grub_strdup (name);
-  grub_errno = GRUB_ERR_NONE;
-
-  return file;
-
- fail:
-  if (device)
-	grub_device_close (device);
-
-  /* if (net) grub_net_close (net);  */
-
-  grub_free (file);
-
-  return 0;
-}
-/* End TCG extension CUSTOM */
-
-
 grub_disk_read_hook_t grub_file_progress_hook;
 
 grub_ssize_t
diff --git a/grub-core/kern/i386/pc/tpm/tpm_kern.c b/grub-core/kern/i386/pc/tpm/tpm_kern.c
index 00714bad5..147baa0e3 100644
--- a/grub-core/kern/i386/pc/tpm/tpm_kern.c
+++ b/grub-core/kern/i386/pc/tpm/tpm_kern.c
@@ -255,7 +255,7 @@ grub_TPM_measure_string( const char* string ) {
 	DEBUG_PRINT( ( "SHA1: " ) );
     print_sha1( convertedResult );
     DEBUG_PRINT( ( "\n" ) );
-    grub_sleep( 5 );
+    grub_sleep( 4 );
 #endif
 
 	/* measure */
@@ -269,7 +269,9 @@ grub_TPM_measure_file( const char* filename, const unsigned long index ) {
 	CHECK_FOR_NULL_ARGUMENT( filename )
 
 	/* open file 'raw' (without any pre-processing filters) */
-	grub_file_t file = grub_file_open_nofilter( filename );
+	grub_file_filter_disable_compression ();
+	grub_file_t file = grub_file_open( filename );
+
 	if( ! file ) {
         grub_print_error();
         grub_fatal( "grub_TPM_measureFile: grub_file_open failed." );
diff --git a/include/grub/file.h b/include/grub/file.h
index 053659635..25f395eeb 100644
--- a/include/grub/file.h
+++ b/include/grub/file.h
@@ -133,15 +133,6 @@ char *EXPORT_FUNC(grub_file_get_device_name) (const char *name);
 
 grub_file_t EXPORT_FUNC(grub_file_open) (const char *name);
 
-/* Begin TCG extension */
-
-/* Used for TPM file measurement */
-/* grub_file_open is not suited for measurement because it does not necessarily return the same file that is stored on disk */
-/* For example it decompresses compressed files automatically */
-grub_file_t EXPORT_FUNC(grub_file_open_nofilter) (const char *name);
-
-/* End TCG extension */
-
 grub_ssize_t EXPORT_FUNC(grub_file_read) (grub_file_t file, void *buf,
 					  grub_size_t len);
 grub_off_t EXPORT_FUNC(grub_file_seek) (grub_file_t file, grub_off_t offset);