diff --git a/scripts/migration.sql b/scripts/migration.sql
index 4ffb491..f63ea87 100644
--- a/scripts/migration.sql
+++ b/scripts/migration.sql
@@ -13,7 +13,7 @@ CREATE TABLE messages2 (
     id integer NOT NULL,
     i integer NOT NULL,
     "timestamp" timestamp without time zone NOT NULL,
-    year integer NOT NULL,
+    year integer,
     certificate text,
     signature text,
     topic text,