diff --git a/drivers/mtd/parsers/sharpslpart.c b/drivers/mtd/parsers/sharpslpart.c
index 0ddb79ac390dd..8893dc82a5c85 100644
--- a/drivers/mtd/parsers/sharpslpart.c
+++ b/drivers/mtd/parsers/sharpslpart.c
@@ -219,7 +219,7 @@ static int sharpsl_nand_init_ftl(struct mtd_info *mtd, struct sharpsl_ftl *ftl)
 	return ret;
 }
 
-void sharpsl_nand_cleanup_ftl(struct sharpsl_ftl *ftl)
+static void sharpsl_nand_cleanup_ftl(struct sharpsl_ftl *ftl)
 {
 	kfree(ftl->log2phy);
 }