diff --git a/mod/content/overtake_probe.script.tl b/mod/content/overtake_probe.script.tl
index 9356a2a..928c1fe 100644
--- a/mod/content/overtake_probe.script.tl
+++ b/mod/content/overtake_probe.script.tl
@@ -43,9 +43,8 @@ local function tryIgnore(follower : Car, leader : Car)
 	mp.dyn.timeToIgnore = IGNORE_SECONDS
 	p(string.format("IGNORE_TEST send veh=%d leader=%d gap=%.1f v=%.2f leaderV=%.2f", follower.v, leader.v, math.abs(leader.pos - follower.pos), follower.speed, leader.speed))
 	local cmd = api.cmd.debug.makeComponentExchangeCmd(follower.v, mp as Engine.Component)
-	api.cmd.sendCommand(cmd, function(_data : any, success : boolean)
-		p(string.format("IGNORE_TEST result veh=%d success=%s", follower.v, tostring(success)))
-	end)
+	-- engine-state scripts can't pass a callback ("Error decoding argument #3"); the next dump shows the effect
+	api.cmd.sendCommand(cmd)
 end
 
 local function dump(dt : number)