diff --git a/embedx/config.schema.json b/embedx/config.schema.json
index eafad4ae6984..ecd8563e338d 100644
--- a/embedx/config.schema.json
+++ b/embedx/config.schema.json
@@ -1449,6 +1449,7 @@
                     },
                     "anyOf": [
                       {
+                        "type": "string",
                         "format": "uri"
                       },
                       {