diff --git a/aviation/machinetag.json b/aviation/machinetag.json
index dbce73b..f23a87c 100644
--- a/aviation/machinetag.json
+++ b/aviation/machinetag.json
@@ -23,8 +23,8 @@
       "exclusive": true
     },
     {
-      "expanded": "criticality",
-      "value": "Criticality"
+      "expanded": "Criticality",
+      "value": "criticality"
     },
     {
       "value": "certainty",