diff --git a/crates/mbe/src/expander/matcher.rs b/crates/mbe/src/expander/matcher.rs
index 910724411d..074407ea74 100644
--- a/crates/mbe/src/expander/matcher.rs
+++ b/crates/mbe/src/expander/matcher.rs
@@ -697,6 +697,7 @@ fn match_meta_var(kind: &str, input: &mut TtIter) -> ExpandResult