diff --git a/benches/bench_enum.rs b/benches/bench_enum.rs
index b13a5e27..d76dae15 100644
--- a/benches/bench_enum.rs
+++ b/benches/bench_enum.rs
@@ -40,8 +40,6 @@ mod decoder {
 
     enum State {
         AnimalState(Animal),
-        DogState,
-        FrogState,
         IntState(int),
         StringState(String),
     }
diff --git a/benches/bench_struct.rs b/benches/bench_struct.rs
index 0cc97819..60008d65 100644
--- a/benches/bench_struct.rs
+++ b/benches/bench_struct.rs
@@ -276,7 +276,7 @@ mod deserializer {
         CharState(char),
         StringState(String),
         OptionState(bool),
-        TupleState(uint),
+        //TupleState(uint),
         VecState(Vec<Inner>),
         MapState(HashMap<String, Option<char>>),
         EndState,
@@ -344,7 +344,7 @@ mod deserializer {
                     }
                     Some(Ok(de::MapStart(len)))
                 }
-                Some(TupleState(len)) => Some(Ok(de::TupleStart(len))),
+                //Some(TupleState(len)) => Some(Ok(de::TupleStart(len))),
                 Some(NullState) => Some(Ok(de::Null)),
                 Some(UintState(x)) => Some(Ok(de::Uint(x))),
                 Some(CharState(x)) => Some(Ok(de::Char(x))),
diff --git a/src/ser.rs b/src/ser.rs
index d12c44b3..dff77850 100644
--- a/src/ser.rs
+++ b/src/ser.rs
@@ -395,6 +395,7 @@ mod tests {
     }
 
     #[deriving(Show)]
+    #[allow(dead_code)]
     enum Error {
         EndOfStream,
         SyntaxError,