X-Git-Url: http://nitlanguage.org

diff --git a/src/parser/xss/lexer.xss b/src/parser/xss/lexer.xss
index d962dce..fccb57c 100644
--- a/src/parser/xss/lexer.xss
+++ b/src/parser/xss/lexer.xss
@@ -22,7 +22,7 @@ $ template make_lexer()
 # It is better user with the Parser
 class Lexer
 	# Last peeked token
-	attr _token: Token
+	attr _token: nullable Token
 
 	# Lexer current state
 	attr _state: Int = 0
@@ -77,7 +77,7 @@ $ end foreach
 		while _token == null do
 			_token = get_token
 		end
-		return _token
+		return _token.as(not null)
 	end
 
 	# Give and consume the next token
@@ -88,11 +88,11 @@ $ end foreach
 			result = get_token
 		end
 		_token = null
-		return result
+		return result.as(not null)
 	end
 
 	# Get a token, or null if it is discarded
-	private meth get_token: Token
+	private meth get_token: nullable Token
 	do
 		var dfa_state = 0