1 files changed, 3 insertions, 0 deletions

diff --git a/src/firejail/preproc.c b/src/firejail/preproc.c
index da50e9a82..0517f3506 100644
--- a/src/firejail/preproc.c
+++ b/src/firejail/preproc.c
@@ -85,7 +85,10 @@ void preproc_build_firejail_dir(void) {
         }
 
         create_empty_file_as_root(RUN_RO_FILE, S_IRUSR);
+        fs_remount(RUN_RO_FILE, MOUNT_READONLY, 0);
+
         create_empty_dir_as_root(RUN_RO_DIR, S_IRUSR);
+        fs_remount(RUN_RO_DIR, MOUNT_READONLY, 0);
 }
 
 // build /run/firejail/mnt directory