diff --git a/crates/mbe/src/tt_iter.rs b/crates/mbe/src/tt_iter.rs
index 16387bc896a..e216e5658b8 100644
--- a/crates/mbe/src/tt_iter.rs
+++ b/crates/mbe/src/tt_iter.rs
@@ -119,6 +119,7 @@ pub(crate) fn expect_single_punct(&mut self) -> Result<&'a tt::Punct, ()> {
             }
             ('-' | '!' | '*' | '/' | '&' | '%' | '^' | '+' | '<' | '=' | '>' | '|', '=', _)
             | ('-' | '=' | '>', '>', _)
+            | ('<', '-', _)
             | (':', ':', _)
             | ('.', '.', _)
             | ('&', '&', _)