diff --git a/tests/long01.at b/tests/long01.at
index 2a2ff30c..b0a36092 100644
--- a/tests/long01.at
+++ b/tests/long01.at
@@ -23,7 +23,7 @@
 # extra block of data. In consequence the following file was not extracted.
 # Reported by Josef Bauer
 # References: <200501122145.j0CLjGhl006070@uhu.mchp.siemens.de>
-# 
+#             http://lists.gnu.org/archive/html/bug-tar/2005-01/msg00038.html
 
 AT_SETUP([long file names divisible by block size])
 AT_KEYWORDS([long512])