diff --git a/vibe_bot/database.py b/vibe_bot/database.py
index 9da4b5e..255716a 100644
--- a/vibe_bot/database.py
+++ b/vibe_bot/database.py
@@ -292,8 +292,9 @@ class ChatDatabase:
                     """,
                     (f"{message_id}_response",),
                 )
-                response: str = cursor.fetchone()[0]
-                results.append((content, response, similarity))
+                response_row = cursor.fetchone()
+                if response_row:
+                    results.append((content, response_row[0], similarity))
 
         conn.close()