diff --git a/helix-syntax/build.rs b/helix-syntax/build.rs
index 009acbff9..70d71f92d 100644
--- a/helix-syntax/build.rs
+++ b/helix-syntax/build.rs
@@ -126,7 +126,9 @@ fn main() {
             tx.send(1).unwrap();
         });
     }
-    assert_eq!(rx.iter().take(n_jobs).sum::<usize>(), n_jobs);
+    pool.join();
+    // drop(tx);
+    assert_eq!(rx.try_iter().sum::<usize>(), n_jobs);
 
     build_dir("tree-sitter-typescript/tsx", "tsx");
     build_dir("tree-sitter-typescript/typescript", "typescript");