diff --git a/schemas/specs/language-spec.json b/schemas/specs/language-spec.json
index 320cbe9ac..c50849af3 100644
--- a/schemas/specs/language-spec.json
+++ b/schemas/specs/language-spec.json
@@ -12,6 +12,9 @@
           "properties": {
             "value": {
               "type": "integer"
+            },
+            "exceptLanguage": {
+              "type": "boolean"
             }
           },
           "required": ["value"],