diff --git a/packages/backend-common/src/database/DatabaseManager.ts b/packages/backend-common/src/database/DatabaseManager.ts
index c1c9e56257..7564f82028 100644
--- a/packages/backend-common/src/database/DatabaseManager.ts
+++ b/packages/backend-common/src/database/DatabaseManager.ts
@@ -227,9 +227,7 @@ export class DatabaseManager {
    * all supported databases excluding SQLite unless `pluginDivisionMode` is set
    * to `schema`.
    */
-  private getConnectionConfig(
-    pluginId: string,
-  ): Partial<Knex.StaticConnectionConfig> {
+  private getConnectionConfig(pluginId: string): Knex.StaticConnectionConfig {
     const { client, overridden } = this.getClientType(pluginId);
 
     let baseConnection = normalizeConnection(
@@ -271,7 +269,7 @@ export class DatabaseManager {
       // include base connection if client type has not been overridden
       ...(overridden ? {} : baseConnection),
       ...connection,
-    } as Partial<Knex.StaticConnectionConfig>;
+    } as Knex.StaticConnectionConfig;
   }
 
   /**