diff --git a/setup-schema/layers.schema.json b/setup-schema/layers.schema.json
index 0ab679a6f..8b46ca08c 100644
--- a/setup-schema/layers.schema.json
+++ b/setup-schema/layers.schema.json
@@ -77,7 +77,7 @@
                                 "patternProperties": { ".*" : {
                                     "description": "A git remote",
                                     "type": "object",
-                                    "addtionalProperties": false,
+                                    "additionalProperties": false,
                                     "required": [
                                         "uri"
                                     ],