diff --git a/migrations/schema.sql b/migrations/schema.sql
index f668cc080..693724450 100644
--- a/migrations/schema.sql
+++ b/migrations/schema.sql
@@ -128,4 +128,4 @@ CREATE TABLE IF NOT EXISTS mailboxes(
     aliasTarget VARCHAR(128), /* the target name type is an alias */
     creationTime TIMESTAMP,
 
-    PRIMARY KEY (id));
+    PRIMARY KEY (name));