diff --git a/src/expr.rs b/src/expr.rs
index 6cfeb9977a96..975af6c02947 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -616,7 +616,7 @@ struct ControlFlow<'a> {
 
 fn extract_pats_and_cond(expr: &ast::Expr) -> (Option<&ast::Pat>, &ast::Expr) {
     match expr.kind {
-        ast::ExprKind::Let(ref pat, ref cond) => (Some(pat), cond),
+        ast::ExprKind::Let(ref pat, ref cond, _) => (Some(pat), cond),
         _ => (None, expr),
     }
 }