diff --git a/src/main.rs b/src/main.rs
index 8ae2e4e..f16afb1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -98,8 +98,8 @@ async fn main() -> Result<(), Box<dyn Error>> {
         )
         .into_stream()
         .try_filter(|message| {
-            let not_empty = !message.is_empty();
-            async move { not_empty }
+            let criteria = !message.is_empty() && message.chars().count() <= 4096;
+            async move { criteria }
         }),
     )
     .map_err(|e| Box::new(e) as Box<dyn Error>);