diff --git a/public/v4/apps/minio.yml b/public/v4/apps/minio.yml
index 9593145..cc086c6 100644
--- a/public/v4/apps/minio.yml
+++ b/public/v4/apps/minio.yml
@@ -23,7 +23,7 @@ services:
             - $$cap_appname
         environment:
             UPSTREAM_HTTP_ADDRESS: http://srv-captain--$$cap_appname:9000
-            CLIENT_MAX_BODY_SIZE: 0
+            CLIENT_MAX_BODY_SIZE: '0'
 caproverOneClickApp:
     variables:
         - id: $$cap_minio_version