diff --git a/backend/knexfile.ts b/backend/knexfile.ts
index 100629cc7..a82f04a43 100644
--- a/backend/knexfile.ts
+++ b/backend/knexfile.ts
@@ -12,6 +12,7 @@ const config: { [key: string]: Knex.Config } = {
     connection: {
       filename: './hedgedoc.sqlite',
     },
+    useNullAsDefault: true,
     migrations: {
       directory: './src/database/migrations',
     },
diff --git a/backend/src/config/database.config.ts b/backend/src/config/database.config.ts
index a03329d1d..3552a4b9c 100644
--- a/backend/src/config/database.config.ts
+++ b/backend/src/config/database.config.ts
@@ -84,6 +84,7 @@ export function getKnexConfig(databaseConfig: DatabaseConfig): Knex.Config {
         connection: {
           filename: databaseConfig.name,
         },
+        useNullAsDefault: true,
       };
     case DatabaseType.POSTGRES:
       return {