diff --git a/config/appsettings.json b/config/appsettings.json
index 67be62c3f1..b4aa97228f 100644
--- a/config/appsettings.json
+++ b/config/appsettings.json
@@ -110,7 +110,8 @@
         "path": "/api/upload",
         "ext": ".pdf",
         "dashboard": "/dashboard/api"	
-      }
+      },
+      "signature": "ONLYOFFICEFORM"
     }
   },
   "web": {