diff --git a/grub-core/fs/affs.c b/grub-core/fs/affs.c
index 3dc80752d..27e03c0c4 100644
--- a/grub-core/fs/affs.c
+++ b/grub-core/fs/affs.c
@@ -535,6 +535,9 @@ static struct grub_fs grub_affs_fs =
     .read = grub_affs_read,
     .close = grub_affs_close,
     .label = grub_affs_label,
+#ifdef GRUB_UTIL
+    .reserved_first_sector = 0,
+#endif
     .next = 0
   };
 
diff --git a/grub-core/fs/cpio.c b/grub-core/fs/cpio.c
index 486d8215c..a6c7a1261 100644
--- a/grub-core/fs/cpio.c
+++ b/grub-core/fs/cpio.c
@@ -362,6 +362,9 @@ static struct grub_fs grub_cpio_fs = {
   .open = grub_cpio_open,
   .read = grub_cpio_read,
   .close = grub_cpio_close,
+#ifdef GRUB_UTIL
+  .reserved_first_sector = 0,
+#endif
 };
 
 #ifdef MODE_USTAR
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index 966bade1b..dbe957470 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -822,6 +822,9 @@ static struct grub_fs grub_xfs_fs =
     .close = grub_xfs_close,
     .label = grub_xfs_label,
     .uuid = grub_xfs_uuid,
+#ifdef GRUB_UTIL
+    .reserved_first_sector = 0,
+#endif
     .next = 0
   };