diff --git a/jenkins/jobs/nodepool.yaml b/jenkins/jobs/nodepool.yaml
index d65f85e902..13b7663e33 100644
--- a/jenkins/jobs/nodepool.yaml
+++ b/jenkins/jobs/nodepool.yaml
@@ -76,7 +76,7 @@
       - devstack-checkout
       - shell: |
           #!/bin/bash -xe
-          if [ "{python}" == "py35" ]; then
+          if [ "{python}" == "-py35" ]; then
               export DEVSTACK_GATE_USE_PYTHON3=true
           fi
           export PYTHONUNBUFFERED=true