1 files changed, 1 insertions, 1 deletions

diff --git a/crates/mbe/src/parser.rs b/crates/mbe/src/parser.rs
index c88387653..61b2a4955 100644
--- a/crates/mbe/src/parser.rs
+++ b/crates/mbe/src/parser.rs
@@ -57,7 +57,7 @@ impl<'a> Iterator for OpDelimitedIter<'a> {
 
     fn size_hint(&self) -> (usize, Option<usize>) {
         let len = self.inner.len() + if self.delimited.is_some() { 2 } else { 0 };
-        let remain = len.checked_sub(self.idx).unwrap_or(0);
+        let remain = len.saturating_sub(self.idx);
         (remain, Some(remain))
     }
 }