diff --git a/schemas/fsssignaldiscovered-v1.0.json b/schemas/fsssignaldiscovered-v1.0.json
index d551031..bca93f2 100644
--- a/schemas/fsssignaldiscovered-v1.0.json
+++ b/schemas/fsssignaldiscovered-v1.0.json
@@ -89,6 +89,7 @@
                             "TimeRemaining": {"$ref" : "#/definitions/disallowed"},
                             "SpawningState": {"type":  "string"},
                             "SpawningFaction" : {"type":  "string"},
+                            "SpawningPower" : {"type":  "string"},
                             "ThreatLevel": {"type": "integer" },
 
                             "patternProperties": {