diff --git a/ui/src/assets/schema/provider/filebacked-http-reloading.schema.json b/ui/src/assets/schema/provider/filebacked-http-reloading.schema.json
index 4de59a093..6723e4cb1 100644
--- a/ui/src/assets/schema/provider/filebacked-http-reloading.schema.json
+++ b/ui/src/assets/schema/provider/filebacked-http-reloading.schema.json
@@ -53,14 +53,14 @@
                     "description": "tooltip.refresh-delay-factor",
                     "type": "string",
                     "widget": {
-                        "id": "number",
-                        "step": 0.01
+                        "id": "string",
+                        "help": "message.real-number"
                     },
                     "placeholder": "label.real-number",
                     "minimum": 0,
                     "maximum": 1,
-                    "default": null,
-                    "pattern": "^([0]*(\\.[0-9]+)?|[0]*\\.[0-9]*[1-9][0-9]*)$"
+                    "default": "",
+                    "pattern": "^(?:([0]*(\\.[0-9]+)?|[0]*\\.[0-9]*[1-9][0-9]*)|)$"
                 }
             }
         }