diff --git a/fs/erofs/data.c b/fs/erofs/data.c
index 132a27deb2f3..b2c12c5856ac 100644
--- a/fs/erofs/data.c
+++ b/fs/erofs/data.c
@@ -39,7 +39,7 @@ void *erofs_bread(struct erofs_buf *buf, erofs_off_t offset, bool need_kmap)
 	 * However, the data access range must be verified here in advance.
 	 */
 	if (buf->file) {
-		fpos = index << PAGE_SHIFT;
+		fpos = (loff_t)index << PAGE_SHIFT;
 		err = rw_verify_area(READ, buf->file, &fpos, PAGE_SIZE);
 		if (err < 0)
 			return ERR_PTR(err);
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 8a0b15511931..43bb5a6a9924 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -1872,7 +1872,7 @@ static void z_erofs_pcluster_readmore(struct z_erofs_frontend *f,
 
 		if (cur < PAGE_SIZE)
 			break;
-		cur = (index << PAGE_SHIFT) - 1;
+		cur = ((loff_t)index << PAGE_SHIFT) - 1;
 	}
 }