diff --git a/tests/scripts/test020-proxycache b/tests/scripts/test020-proxycache
index 6616e16876a4b0171f7dc8ae79dc31fd45134a9d..42e1cd36efda67fc2a340f97caa80b6bbc27a204 100755
--- a/tests/scripts/test020-proxycache
+++ b/tests/scripts/test020-proxycache
@@ -23,8 +23,8 @@ mkdir -p $TESTDIR $DBDIR1 $DBDIR2
 # - verify answerability
 
 echo "Starting master slapd on TCP/IP port $PORT1..."
-. $CONFFILTER < $CACHEMASTERCONF > $CONF
-$SLAPD -f $CONF -h $URI1 -d $LVL > $LOG1 2>&1 &
+. $CONFFILTER < $CACHEMASTERCONF > $CONF1
+$SLAPD -f $CONF1 -h $URI1 -d $LVL > $LOG1 2>&1 &
 PID=$!
 if test $WAIT != 0 ; then
 	echo PID $PID