Index: src/uk/me/parabola/imgfmt/app/labelenc/Format6Encoder.java
===================================================================
--- src/uk/me/parabola/imgfmt/app/labelenc/Format6Encoder.java	(revision 1647)
+++ src/uk/me/parabola/imgfmt/app/labelenc/Format6Encoder.java	(working copy)
@@ -63,7 +63,7 @@
 
 		String s = text.toUpperCase(Locale.ENGLISH);
 
-		byte[] buf = new byte[2 * s.length() + 1];
+		byte[] buf = new byte[2 * s.length() + 2];
 		int off = 0;
 
 		for (char c : transliterator.transliterate(s).toCharArray()) {