diff --git a/mods/ts/rules/gdi-structures.yaml b/mods/ts/rules/gdi-structures.yaml
index 8f8de69082..c75c1e9a81 100644
--- a/mods/ts/rules/gdi-structures.yaml
+++ b/mods/ts/rules/gdi-structures.yaml
@@ -403,8 +403,8 @@ GAPLUG:
 		ChargeTime: 180
 		Description: Ion Cannon
 		LongDesc: Initiate an Ion Cannon strike.\nApplies instant damage to a small area.
-		EndChargeSound: 00-i156.aud
 		SelectTargetSound:
+		EndChargeSpeechNotification: IonCannonReady
 		DisplayRadarPing: True
 		CameraActor: camera
 	ProduceActorPower: