diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 62574886a9111e26dd86843b0c19e9039d82ab0f..0f6bfabf5372f9dc915341e5c8dd8705f7804d21 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1890,6 +1890,8 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size)
 		if (num < PAGE_SIZE) {
 			scatter_elem_sz = PAGE_SIZE;
 			scatter_elem_sz_prev = PAGE_SIZE;
+			if (!num)
+				num = PAGE_SIZE;
 		} else
 			scatter_elem_sz_prev = num;
 	}