diff --git a/stdx/d/lexer.d b/stdx/d/lexer.d
index 3a6d9d7..c042007 100644
--- a/stdx/d/lexer.d
+++ b/stdx/d/lexer.d
@@ -99,6 +99,7 @@ public enum CommentBehavior : ubyte
 
 public struct LexerConfig
 {
+	string fileName;
     StringBehavior stringBehavior;
     WhitespaceBehavior whitespaceBehavior;
     CommentBehavior commentBehavior;