diff --git a/h2o-scala/testMultiNode.sh b/h2o-scala/testMultiNode.sh
index 360efa1fd33..181d369ea97 100755
--- a/h2o-scala/testMultiNode.sh
+++ b/h2o-scala/testMultiNode.sh
@@ -102,6 +102,6 @@ fi
 
 # Launch last driver JVM.  All output redir'd at the OS level to sandbox files.
 echo Running h2o-scala junit tests...
-($JVM $TEST_SSL -Ddoonly.tests=$DOONLY -Dignore.tests=$IGNORE -Dbuild.id=$BUILD_ID -Djob.name=$JOB_NAME -Dgit.commit=$GIT_COMMIT -Dgit.branch=$GIT_BRANCH -Dai.h2o.name=$CLUSTER_NAME -Dai.h2o.baseport=$CLUSTER_BASEPORT -Dai.h2o.ga_opt_out=yes $JACOCO_FLAG $JUNIT_RUNNER `cat $OUTDIR/tests.txt` 2>&1 ; echo $? > $OUTDIR/status.0) 1> $OUTDIR/out.0 2>&1
+($JVM $TEST_SSL -DcloudSize=5 -Ddoonly.tests=$DOONLY -Dignore.tests=$IGNORE -Dbuild.id=$BUILD_ID -Djob.name=$JOB_NAME -Dgit.commit=$GIT_COMMIT -Dgit.branch=$GIT_BRANCH -Dai.h2o.name=$CLUSTER_NAME -Dai.h2o.baseport=$CLUSTER_BASEPORT -Dai.h2o.ga_opt_out=yes $JACOCO_FLAG $JUNIT_RUNNER `cat $OUTDIR/tests.txt` 2>&1 ; echo $? > $OUTDIR/status.0) 1> $OUTDIR/out.0 2>&1
 
 cleanup