1 files changed, 1 insertions, 1 deletions
diff --git a/decoder/oracle_bleu.h b/decoder/oracle_bleu.h
index 550f438f..6708b02e 100755
--- a/decoder/oracle_bleu.h
+++ b/decoder/oracle_bleu.h
@@ -38,7 +38,7 @@ struct Translation {
     out<<pre<<"features: "<<features<<std::endl;
   }
   bool is_null() {
-    return features.size()==0 /* && sentence.size()==0 */;
+    return features.empty() /* && sentence.empty() */;
   }
 
 };