diff --git a/core/embedjs-interfaces/src/interfaces/base-model.ts b/core/embedjs-interfaces/src/interfaces/base-model.ts
index e5ee90b..80a4d5c 100644
--- a/core/embedjs-interfaces/src/interfaces/base-model.ts
+++ b/core/embedjs-interfaces/src/interfaces/base-model.ts
@@ -105,7 +105,7 @@ export abstract class BaseModel {
             conversation = { conversationId: 'default', entries: [] };
         }
 
-        const messages = await this.prepare(system, userQuery, supportingContext, conversation.entries.slice(0, -1));
+        const messages = await this.prepare(system, userQuery, supportingContext, conversation.entries);
         const uniqueSources = this.extractUniqueSources(supportingContext);
         const timestamp = new Date();
         const id = uuidv4();