diff --git a/src/expr.rs b/src/expr.rs
index 325841fbfd1..7cc3e7fadf1 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -113,7 +113,7 @@ impl Rewrite for ast::Expr {
                                 offset,
                                 true)
             }
-            ast::Expr_::ExprMatch(ref cond, ref arms, _) => {
+            ast::Expr_::ExprMatch(ref cond, ref arms) => {
                 rewrite_match(context, cond, arms, width, offset, self.span)
             }
             ast::Expr_::ExprPath(ref qself, ref path) => {