1 files changed, 2 insertions, 2 deletions
diff --git a/src/libcollections/enum_set.rs b/src/libcollections/enum_set.rs
index 9765bb5875e..8cbf50d29f2 100644
--- a/src/libcollections/enum_set.rs
+++ b/src/libcollections/enum_set.rs
@@ -36,7 +36,7 @@ impl<E:CLike + fmt::Debug> fmt::Debug for EnumSet<E> {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         try!(write!(fmt, "EnumSet {{"));
         let mut first = true;
-        for e in self.iter() {
+        for e in self {
             if !first {
                 try!(write!(fmt, ", "));
             }
@@ -266,7 +266,7 @@ impl<'a, E> IntoIterator for &'a EnumSet<E> where E: CLike {
 }
 
 impl<E:CLike> Extend<E> for EnumSet<E> {
-    fn extend<I: Iterator<Item=E>>(&mut self, mut iterator: I) {
+    fn extend<I: Iterator<Item=E>>(&mut self, iterator: I) {
         for element in iterator {
             self.insert(element);
         }