diff --git a/bin/tests/system/nsupdate/clean.sh b/bin/tests/system/nsupdate/clean.sh
index abde14b879..a24e607935 100644
--- a/bin/tests/system/nsupdate/clean.sh
+++ b/bin/tests/system/nsupdate/clean.sh
@@ -15,14 +15,14 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id: clean.sh,v 1.15 2009/07/30 15:11:41 each Exp $
+# $Id: clean.sh,v 1.16 2009/10/27 05:57:06 each Exp $
 
 #
 # Clean up after zone transfer tests.
 #
 
 rm -f dig.out.ns1 dig.out.ns2 dig.out.ns1.after ns1/*.jnl ns2/*.jnl \
-    ns1/example.db ns1/update.db ns1/other.db
+    ns1/example.db ns1/update.db ns1/other.db ns1/ddns.key
 rm -f random.data
 rm -f ns2/example.bk
 rm -f ns2/update.bk