diff --git a/tools/ci/before_install.sh b/tools/ci/before_install.sh
index bf7d48c0042ac0..9b80fd9578544e 100644
--- a/tools/ci/before_install.sh
+++ b/tools/ci/before_install.sh
@@ -1,13 +1,13 @@
 #!/bin/bash
 set -e
 
-if [[ $(./wpt test-jobs --includes $JOB; echo $?) -eq 0 ]]; then
+if [[ -z ${RUN_JOB+x} && $(./wpt test-jobs --includes $JOB; echo $?) -eq 0 ]] || [[ $RUN_JOB -eq 1 ]]; then
     export RUN_JOB=1
     git submodule update --init --recursive 1>&2
     export DISPLAY=:99.0
     sh -e /etc/init.d/xvfb start 1>&2
     # For uploading the manifest
     export WPT_MANIFEST_FILE=$HOME/meta/MANIFEST-$(git rev-parse HEAD).json
-else
+elif [[ -z ${RUN_JOB+x} ]]; then
     export RUN_JOB=0
 fi