diff --git a/backend/src/main/resources/dynamic-http-metadata-provider.schema.json b/backend/src/main/resources/dynamic-http-metadata-provider.schema.json
index f9dec02b8..4b8dc513f 100644
--- a/backend/src/main/resources/dynamic-http-metadata-provider.schema.json
+++ b/backend/src/main/resources/dynamic-http-metadata-provider.schema.json
@@ -152,8 +152,8 @@
                         "step": 0.01
                     },
                     "placeholder": "label.real-number",
-                    "minimum": 0,
-                    "maximum": 1,
+                    "minimum": 0.01,
+                    "maximum": 0.99,
                     "default": null
                 },
                 "minCacheDuration": {