diff --git a/values.yaml b/values.yaml
index 6537cde..61ce959 100644
--- a/values.yaml
+++ b/values.yaml
@@ -48,7 +48,7 @@ statefulset:
   affinity: {}
   extraVolumes: []
   securityContext: {}
-  serviceAccountName: null
+  serviceAccountName: ""
 
   actRunner:
     registry: "docker.gitea.com"