diff --git a/hblang/src/lib.rs b/hblang/src/lib.rs
index f5e33cdea..636325d92 100644
--- a/hblang/src/lib.rs
+++ b/hblang/src/lib.rs
@@ -444,11 +444,7 @@ pub fn parse_from_fs(extra_threads: usize, root: &str) -> io::Result<Vec<Ast>> {
     seen.lock().unwrap().insert(path.clone(), 0);
     tasks.push((0, path, None));
 
-    if extra_threads == 0 {
-        thread();
-    } else {
-        std::thread::scope(|s| (0..extra_threads + 1).for_each(|_| _ = s.spawn(thread)));
-    }
+    std::thread::scope(|s| (0..extra_threads + 1).for_each(|_| _ = s.spawn(thread)));
 
     ast.into_inner().unwrap().into_iter().collect::<io::Result<Vec<_>>>()
 }