diff --git a/schemas/global.json b/schemas/global.json
index 57bbd61..2bbc023 100644
--- a/schemas/global.json
+++ b/schemas/global.json
@@ -43,6 +43,9 @@
                             "$ref": "legacy.json#/$defs/ExitAirTempSensor"
                         },
                         {
+                            "$ref": "legacy.json#/$defs/CFMSensor"
+                        },
+                        {
                             "$ref": "virtual_sensor.json#/$defs/VirtualSensor"
                         },
                         {