diff --git a/bin/tests/system/xfer/prereq.sh b/bin/tests/system/xfer/prereq.sh
index 96acf14ded..4949de9e85 100644
--- a/bin/tests/system/xfer/prereq.sh
+++ b/bin/tests/system/xfer/prereq.sh
@@ -14,6 +14,8 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
+# $Id$
+
 if $PERL -e 'use Net::DNS;' 2>/dev/null
 then
     if $PERL -e 'use Net::DNS; die if $Net::DNS::VERSION == 0.73;' 2>/dev/null