diff --git a/src/libcollections/vec.rs b/src/libcollections/vec.rs
index 53b7ae0703bf..5477a1f6331b 100644
--- a/src/libcollections/vec.rs
+++ b/src/libcollections/vec.rs
@@ -1517,7 +1517,7 @@ impl<T> FromIterator<T> for Vec<T> {
                 vector
             }
         };
-        vector.extend_desugared(iterator);
+        vector.extend(iterator);
         vector
     }
 }