diff --git a/src/smart-extractor.ts b/src/smart-extractor.ts
index 11354ae6..26344105 100644
--- a/src/smart-extractor.ts
+++ b/src/smart-extractor.ts
@@ -554,7 +554,7 @@ export class SmartExtractor {
     const maxChars = this.config.extractMaxChars ?? 8000;
     const truncated =
       conversationText.length > maxChars
-        ? conversationText.slice(-maxChars)
+        ? conversationText.slice(0, maxChars)
         : conversationText;
 
     // Strip platform envelope metadata injected by OpenClaw channels