diff --git a/mods/ts/rules/gdi-structures.yaml b/mods/ts/rules/gdi-structures.yaml
index 9be58d917d..565fd7401a 100644
--- a/mods/ts/rules/gdi-structures.yaml
+++ b/mods/ts/rules/gdi-structures.yaml
@@ -403,7 +403,7 @@ GAPLUG:
 		Icon: ioncannon
 		Effect: ionring
 		WeaponDelay: 0
-		ChargeTime: 180
+		ChargeTime: 510
 		Description: Ion Cannon
 		LongDesc: Initiate an Ion Cannon strike.\nApplies instant damage to a small area.
 		EndChargeSpeechNotification: IonCannonReady