diff --git a/src/runboat/k8s.py b/src/runboat/k8s.py
index 1b3f7ee..b24dde0 100644
--- a/src/runboat/k8s.py
+++ b/src/runboat/k8s.py
@@ -262,13 +262,13 @@ def kill_job(build_name: str, job_kind: DeploymentMode) -> None:
     batchv1 = client.BatchV1Api()
     batchv1.delete_collection_namespaced_job(
         namespace=settings.build_namespace,
-        label_selector=f"runboat/build={build_name},runboat/job-kind={job_kind}",
+        label_selector=f"runboat/build={build_name},runboat/job-kind={job_kind.value}",
         grace_period_seconds=0,
     )
     corev1 = client.CoreV1Api()
     corev1.delete_collection_namespaced_pod(
         namespace=settings.build_namespace,
-        label_selector=f"runboat/build={build_name},runboat/job-kind={job_kind}",
+        label_selector=f"runboat/build={build_name},runboat/job-kind={job_kind.value}",
         grace_period_seconds=0,
     )