diff --git a/lexer/src/lib.rs b/lexer/src/lib.rs
index 8741851..dd947a9 100644
--- a/lexer/src/lib.rs
+++ b/lexer/src/lib.rs
@@ -45,9 +45,6 @@ impl<T> Lexer<T> where T: Iterator<Item=char> {
     }
 }
 
-impl<T> Lexer<T> where T: Iterator<Item=char> {
-}
-
 impl<T> Iterator for Lexer<T> where T: Iterator<Item=char> {
     type Item = Result;