diff --git a/src/main.rs b/src/main.rs
index c547e3f..06beebe 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -150,6 +150,7 @@ impl EventHandler for Handler {
             .create_chat_completion(openai::ChatCompletion {
                 model: self.model.clone(),
                 messages: msgs,
+                max_tokens: Some(450), // abt 1800 characters
                 ..Default::default()
             })
             .await