diff --git a/jupyterhub/templates/proxy/deployment.yaml b/jupyterhub/templates/proxy/deployment.yaml
index 389a160df8..70d53c0193 100644
--- a/jupyterhub/templates/proxy/deployment.yaml
+++ b/jupyterhub/templates/proxy/deployment.yaml
@@ -64,7 +64,7 @@ spec:
           - --port=8000
           {{ end }}
           {{ if .Values.debug.enabled }}
-          - --log-level debug
+          - --log-level=debug
           {{ end }}
           resources:
           {{ if $manualHTTPS }}