diff --git a/.drone.yml b/.drone.yml
index 06c7465..c1b8a2b 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -24,7 +24,7 @@ steps:
     password:
       from_secret: DOCKER_PASSWORD
     auto_tag: true
-    auto_tag_suffix: -diagram
+    auto_tag_suffix: diagram
     dockerfile: Dockerfile.ubuntu
     target: stage-diagram