diff --git a/zscript/pulsegun.zsc b/zscript/pulsegun.zsc
index e1c7879..e3002cc 100644
--- a/zscript/pulsegun.zsc
+++ b/zscript/pulsegun.zsc
@@ -542,7 +542,7 @@ Class StarterBolt : PulseBolt
 		A_SetPitch(target.BulletSlope());
 		frame++;
 		if ( frame > 4 ) frame = 0;
-		CheckBeam(x);
+		CheckBeam((cos(angle)*cos(pitch),sin(angle)*cos(pitch),-sin(pitch)));
 	}
 }