diff --git a/packages/vector-store-service/src/vectorstore/mongodb.ts b/packages/vector-store-service/src/vectorstore/mongodb.ts
index 95231bf4..71e08901 100644
--- a/packages/vector-store-service/src/vectorstore/mongodb.ts
+++ b/packages/vector-store-service/src/vectorstore/mongodb.ts
@@ -104,6 +104,8 @@ async function importMongoDB() {
         return { MongoClient }
     } catch (err) {
         logger.error(err)
-        throw new Error('Please install mongodb as a dependency`')
+        throw new Error(
+            'Please install mongodb as a dependency with, e.g. `npm install -S mongodb`'
+        )
     }
 }