diff --git a/src/main.rs b/src/main.rs
index d8acbf5..2241df0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -110,7 +110,7 @@ rust_cgi::cgi_main!(|req: cgi::http::Request<Vec<u8>>| -> rust_cgi::Response {
   let image = req.into_body();
   let gif = match futures::executor::block_on(make_gif(&image, qd)) {
     Ok(gif) => gif,
-    Err(_) => return cgi::text_response(500, "Failed to process image"),
+    Err(_) => return cgi::text_response(500, "Failed to process image!"),
   };
   rust_cgi::binary_response(200, CONTENT_TYPE, gif)
 });