diff --git a/cluster/gce/util.sh b/cluster/gce/util.sh
index 0545647737..ab93b90e2b 100755
--- a/cluster/gce/util.sh
+++ b/cluster/gce/util.sh
@@ -1343,6 +1343,11 @@ EOF
     if [ -n "${ADDON_MANAGER_LEADER_ELECTION:-}" ]; then
       cat >>$file <<EOF
 ADDON_MANAGER_LEADER_ELECTION: $(yaml-quote ${ADDON_MANAGER_LEADER_ELECTION})
+EOF
+    fi
+    if [ -n "${API_SERVER_TEST_LOG_LEVEL:-}" ]; then
+      cat >>$file <<EOF
+API_SERVER_TEST_LOG_LEVEL: $(yaml-quote ${API_SERVER_TEST_LOG_LEVEL})
 EOF
     fi