1 files changed, 5 insertions, 2 deletions
diff --git a/runtime/Java/src/org/antlr/v4/runtime/dfa/LexerDFASerializer.java b/runtime/Java/src/org/antlr/v4/runtime/dfa/LexerDFASerializer.java
index d1d0cca..83d4f8c 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/dfa/LexerDFASerializer.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/dfa/LexerDFASerializer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2016 The ANTLR Project. All rights reserved.
+ * Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
  * Use of this file is governed by the BSD 3-clause license that
  * can be found in the LICENSE.txt file in the project root.
  */
@@ -16,6 +16,9 @@ public class LexerDFASerializer extends DFASerializer {
 	@Override
 
 	protected String getEdgeLabel(int i) {
-		return "'"+(char)i+"'";
+		return new StringBuilder("'")
+				.appendCodePoint(i)
+				.append("'")
+				.toString();
 	}
 }