diff --git a/bin/tests/system/cacheclean/tests.sh b/bin/tests/system/cacheclean/tests.sh
index 9f69e00510..002f61f3ef 100644
--- a/bin/tests/system/cacheclean/tests.sh
+++ b/bin/tests/system/cacheclean/tests.sh
@@ -57,7 +57,11 @@ EOF
 
 dump_cache () {
         $RNDC $RNDCOPTS dumpdb -cache _default
-        sleep 1
+        for i in 0 1 2 3 4 5 6 7 8 9
+        do
+                grep '^; Dump complete$' ns2/named_dump.db > /dev/null && break
+                sleep 1
+        done
         mv ns2/named_dump.db ns2/named_dump.db.$n
 }