diff --git a/db/migration/000001_init_schema.up.sql b/db/migration/000001_init_schema.up.sql
index d5685df..7b14282 100644
--- a/db/migration/000001_init_schema.up.sql
+++ b/db/migration/000001_init_schema.up.sql
@@ -10,7 +10,6 @@ CREATE TABLE "mails" (
   "created" timestamptz NOT NULL DEFAULT (now()),
   "changer" varchar NOT NULL,
   "changed" timestamptz NOT NULL DEFAULT (now())
-
 );
 
 CREATE TABLE "customers" (
@@ -116,8 +115,8 @@ CREATE TABLE "returns" (
 
 CREATE TABLE "returnsLog" (
   "ID" bigserial UNIQUE PRIMARY KEY NOT NULL,
-  "returnsID" bigint,
-  "mailID" bigint,
+  "returnsID" bigint NOT NULL,
+  "mailID" bigint NOT NULL,
   "status" varchar,
   "creator" varchar NOT NULL,
   "created" timestamptz NOT NULL DEFAULT (now()),
@@ -139,4 +138,4 @@ ALTER TABLE "returns" ADD FOREIGN KEY ("providerID") REFERENCES "providers" ("ID
 
 ALTER TABLE "returnsLog" ADD FOREIGN KEY ("returnsID") REFERENCES "returns" ("ID");
 
-ALTER TABLE "returnsLog" ADD FOREIGN KEY ("mailID") REFERENCES "mails" ("ID");
+ALTER TABLE "returnsLog" ADD FOREIGN KEY ("mailID") REFERENCES "mails" ("ID");
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