diff --git a/tools/playbooks/setup.yaml b/tools/playbooks/setup.yaml
index 9ead716..333ccd8 100644
--- a/tools/playbooks/setup.yaml
+++ b/tools/playbooks/setup.yaml
@@ -26,7 +26,8 @@
         password: secret
         body: "{{ lookup('file', '/var/ssh/admin.pub') }}"
         status_code: 201
-        HEADER_Content-Type: text/plain
+        headers:
+          Content-Type: text/plain
 
     - name: Create temp dir for Gerrit config update
       shell: mktemp -d