diff --git a/.drone.yml b/.drone.yml
index 20b94e4..dbf4eea 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -6,7 +6,7 @@ steps:
   - name: debug registry secrets
     image: alpine
     commands:
-      - echo "${docker_username}"
+      - echo "$docker_username"
 
   - name: build and push flappy image
     image: plugins/docker