diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 16629382a787..82b1e6392b16 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -563,7 +563,7 @@ int mtd_pairing_info_to_wunit(struct mtd_info *mtd,
 		return -EINVAL;
 
 	if (master->pairing && master->pairing->get_wunit)
-		return mtd->pairing->get_wunit(master, info);
+		return master->pairing->get_wunit(master, info);
 
 	return info->pair;
 }