diff --git a/keyserver/src/database/migration-config.js b/keyserver/src/database/migration-config.js
--- a/keyserver/src/database/migration-config.js
+++ b/keyserver/src/database/migration-config.js
@@ -692,6 +692,17 @@
       );
     },
   ],
+  [
+    55,
+    async () => {
+      await dbQuery(
+        SQL`
+          ALTER TABLE threads
+          DROP COLUMN IF EXISTS default_role
+        `,
+      );
+    },
+  ],
 ]);
 const newDatabaseVersion: number = Math.max(...migrations.keys());
 
diff --git a/keyserver/src/database/setup-db.js b/keyserver/src/database/setup-db.js
--- a/keyserver/src/database/setup-db.js
+++ b/keyserver/src/database/setup-db.js
@@ -158,7 +158,6 @@
         containing_thread_id bigint(20) DEFAULT NULL,
         community bigint(20) DEFAULT NULL,
         depth int UNSIGNED NOT NULL DEFAULT 0,
-        default_role bigint(20) NOT NULL,
         creator varchar(255) CHARSET latin1 COLLATE latin1_bin NOT NULL,
         creation_time bigint(20) NOT NULL,
         color char(6) COLLATE utf8mb4_bin NOT NULL,