diff --git a/rules/defaults.yaml b/rules/defaults.yaml
index b12201bf5..dc36a3ade 100644
--- a/rules/defaults.yaml
+++ b/rules/defaults.yaml
@@ -159,6 +159,9 @@
 		Range: 4c0
 	Tooltip:
 		Description: Tech Building
+	CaptureNotification:
+		Notification: TechBuildingCaptured
+		LoseNotification: TechBuildingLost
 
 ^Flag:
 	Inherits: ^CivBuilding