diff --git a/mtdutils/mounts.h b/mtdutils/mounts.h
index 2e2765a..30b2927 100644
--- a/mtdutils/mounts.h
+++ b/mtdutils/mounts.h
@@ -28,4 +28,6 @@
 
 int unmount_mounted_volume(const MountedVolume *volume);
 
+int remount_read_only(const MountedVolume* volume);
+
 #endif  // MTDUTILS_MOUNTS_H_