diff --git a/zspecial.acs b/zspecial.acs
index 8f2fe1a..c892eeb 100644
--- a/zspecial.acs
+++ b/zspecial.acs
@@ -358,7 +358,7 @@ special
 	-88:SetActorRoll(2),
 	-89:ChangeActorRoll(2,3),
 	-90:GetActorRoll(1),
-	-91:QuakeEx(8,14),
+	-91:QuakeEx(8,16),
 	-92:Warp(6,11),
 	-93:GetMaxInventory(2),
 	-94:SetSectorDamage(2,5),