diff --git a/examples/write-large-file.rs b/examples/write-large-file.rs
index 3c40977f..c30c52bb 100644
--- a/examples/write-large-file.rs
+++ b/examples/write-large-file.rs
@@ -13,7 +13,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     }
 
     let filename = &*args[1];
-    #![cfg(feature = "_deflate-any")] {
+    #[cfg(feature = "_deflate-any")] {
         doit(filename)?;
     }
     Ok(())