diff --git a/docker.yml b/docker.yml
index 3ac23ab..d1026a6 100644
--- a/docker.yml
+++ b/docker.yml
@@ -123,7 +123,7 @@
           }
 
     - name: mariadb env defaults
-      copy:
+      blockinfile:
         path: /home/docker/_defaults/mariadb/mariadb.env
         mode: "0444"
         owner: root