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-rw-r--r--src/libsyntax/fold.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax/fold.rs b/src/libsyntax/fold.rs
index 297ec6acf51..8fbaea7ac1e 100644
--- a/src/libsyntax/fold.rs
+++ b/src/libsyntax/fold.rs
@@ -306,7 +306,7 @@ pub trait Folder {
 
     fn fold_explicit_self_(&mut self, es: &ExplicitSelf_) -> ExplicitSelf_ {
         match *es {
-            SelfStatic | SelfValue | SelfUniq | SelfBox => *es,
+            SelfStatic | SelfValue | SelfUniq => *es,
             SelfRegion(ref lifetime, m) => {
                 SelfRegion(fold_opt_lifetime(lifetime, self), m)
             }