diff --git a/templates/nextcloud/.felhom.yml b/templates/nextcloud/.felhom.yml
index 8d87fc9..7249c1d 100644
--- a/templates/nextcloud/.felhom.yml
+++ b/templates/nextcloud/.felhom.yml
@@ -107,7 +107,10 @@ healthcheck:
       path: "/status.php"
       expect:
         status: 200
-        body_contains: "installed"
+        # R-613 sweep (2026-10-05): "installed" alone matched {"installed":false,...} too — status.php names the key
+        # either way — so an install that never finished (the web installer up, nobody can sign in) read healthy.
+        # status.php is PHP json_encode (no spaces): the installed one says "installed":true.
+        body_contains: '"installed":true'
 
 # --- After a load of kept data (`09` §3 decision 36; controller ≥ the kept-data release) ---
 # „Use my kept data" / „Load" restores the database from a backup under the files kept on the drive.