diff --git a/clusters/cl01tl/manifests/matrix-synapse/Deployment-matrix-synapse.yaml b/clusters/cl01tl/manifests/matrix-synapse/Deployment-matrix-synapse.yaml
index 272d67478..b167ece80 100644
--- a/clusters/cl01tl/manifests/matrix-synapse/Deployment-matrix-synapse.yaml
+++ b/clusters/cl01tl/manifests/matrix-synapse/Deployment-matrix-synapse.yaml
@@ -28,7 +28,7 @@ spec:
         app.kubernetes.io/instance: matrix-synapse
         app.kubernetes.io/component: synapse
     spec:
-      serviceAccountName: default
+      serviceAccountName: matrix-synapse
       securityContext: {}
       initContainers:
         - name: volume-permissions