diff --git a/language.version b/language.version
index 6b12b9be9..3a3173cb4 100644
--- a/language.version
+++ b/language.version
@@ -1,3 +1,3 @@
 [default]
-SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r477 \cu(Mon 19 Sep 01:02:21 CEST 2022)\c-";
-SWWM_SHORTVER="\cw1.3pre r477 \cu(2022-09-19 01:02:21)\c-";
+SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r478 \cu(Mon 19 Sep 01:02:40 CEST 2022)\c-";
+SWWM_SHORTVER="\cw1.3pre r478 \cu(2022-09-19 01:02:40)\c-";
diff --git a/zscript/swwm_common.zsc b/zscript/swwm_common.zsc
index fcb550582..f14403871 100644
--- a/zscript/swwm_common.zsc
+++ b/zscript/swwm_common.zsc
@@ -233,8 +233,12 @@ Class SWWMQuickCombatTracker : Inventory
 
 	static SWWMQuickCombatTracker Update( SWWMHandler hnd, PlayerInfo p, Actor target, int damage = 0 )
 	{
-		if ( target.bNODAMAGE ) return null;	// no-damage entities get no healthbars
-		if ( target is 'LampMoth' ) return null;	// also don't give healthbars to moths
+		// no-damage entities get no healthbars
+		if ( target.bNODAMAGE ) return null;
+		// also don't give healthbars to moths
+		if ( target is 'LampMoth' ) return null;
+		// don't give them to boss brains unless visible
+		if ( (target is 'BossBrain') && !p.Camera.CheckSight(target,SF_IGNOREVISIBILITY|SF_IGNOREWATERBOUNDARY) ) return null;
 		SWWMQuickCombatTracker t = null;
 		for ( Inventory i=target.inv; i; i=i.inv )
 		{