diff --git a/fs_mgr/fs_mgr.cpp b/fs_mgr/fs_mgr.cpp
index 25c41b96e..38bbe9805 100644
--- a/fs_mgr/fs_mgr.cpp
+++ b/fs_mgr/fs_mgr.cpp
@@ -1020,7 +1020,7 @@ out:
  * mount a tmpfs filesystem at the given point.
  * return 0 on success, non-zero on failure.
  */
-int fs_mgr_do_tmpfs_mount(char *n_name)
+int fs_mgr_do_tmpfs_mount(const char *n_name)
 {
     int ret;
 
diff --git a/fs_mgr/include/fs_mgr.h b/fs_mgr/include/fs_mgr.h
index 52f27ab51..a5e5bebb9 100644
--- a/fs_mgr/include/fs_mgr.h
+++ b/fs_mgr/include/fs_mgr.h
@@ -106,7 +106,7 @@ int fs_mgr_mount_all(struct fstab *fstab, int mount_mode);
 int fs_mgr_do_mount(struct fstab *fstab, const char *n_name, char *n_blk_device,
                     char *tmp_mount_point);
 int fs_mgr_do_mount_one(struct fstab_rec *rec);
-int fs_mgr_do_tmpfs_mount(char *n_name);
+int fs_mgr_do_tmpfs_mount(const char *n_name);
 int fs_mgr_unmount_all(struct fstab *fstab);
 int fs_mgr_get_crypt_info(struct fstab *fstab, char *key_loc,
                           char *real_blk_device, int size);