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-rw-r--r--src/libstd/serialization.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/serialization.rs b/src/libstd/serialization.rs
index 1b91b34fe11..1cc8cb529d8 100644
--- a/src/libstd/serialization.rs
+++ b/src/libstd/serialization.rs
@@ -241,7 +241,7 @@ fn test_option_int() {
     fn deserialize_0<S: deserializer>(s: S) -> option<int> {
         s.read_enum("option") {||
             s.read_enum_variant {|i|
-                alt i {
+                alt check i {
                   0u { none }
                   1u {
                     let v0 = s.read_enum_variant_arg(0u) {||