diff --git a/ct/docker.sh b/ct/docker.sh
index f5b9b8c8e8..221149c9ef 100644
--- a/ct/docker.sh
+++ b/ct/docker.sh
@@ -47,7 +47,7 @@ function update_script() {
     msg_ok "Docker Compose updated"
   fi
 
-  if docker ps -a --format '{{.Names}}' | grep -q '^portainer$'; then
+  if docker ps -a --format '{{.Image}}' | grep -q '^portainer/portainer-ce:latest$'; then
     msg_info "Updating Portainer"
     $STD docker pull portainer/portainer-ce:latest
     $STD docker stop portainer && docker rm portainer