diff --git a/lib/scanner.dart b/lib/scanner.dart
index 1ecd995..9243112 100644
--- a/lib/scanner.dart
+++ b/lib/scanner.dart
@@ -49,6 +49,9 @@
 	_addStringToken(int type) {
 		int l = _r.line, c = _r.column;
 		var value = _readString();
+		if (type != _TEXT && type != _COMMENT) {
+			value = value.trim();
+		}
 		_tokens.add(new _Token(type, value, l, c));
 	}