diff --git a/src/auto-reply/reply/strip-inbound-meta.ts b/src/auto-reply/reply/strip-inbound-meta.ts
index a8be10aa0a1..aac05f85df9 100644
--- a/src/auto-reply/reply/strip-inbound-meta.ts
+++ b/src/auto-reply/reply/strip-inbound-meta.ts
@@ -151,7 +151,7 @@ function stripActiveMemoryPromptPrefixBlocks(lines: string[]): string[] {
       }
     }
 
-    result.push(lines[index]!);
+    result.push(lines[index]);
   }
 
   return result;