diff --git a/Adventures in Lestoria/AdventuresInLestoria.cpp b/Adventures in Lestoria/AdventuresInLestoria.cpp
index 9b4e7f79..0eaf5219 100644
--- a/Adventures in Lestoria/AdventuresInLestoria.cpp	
+++ b/Adventures in Lestoria/AdventuresInLestoria.cpp	
@@ -4237,8 +4237,8 @@ void AiL::UpdateMonsters(){
 		MONSTER_LIST.push_back(std::make_unique<Monster>(m));
 		if(MONSTER_LIST.capacity()>prevCapacity)LOG(std::format("WARNING! The monster list has automatically reserved more space and resized to {}! This caused one potential frame where bullet/effect hitlists that stored information on what monsters were hit to potentially be hit a second time or cause monsters that should've been hit to never be hit. Consider starting with a larger default reserved size for MONSTER_LIST if your intention was to have this many monsters!",MONSTER_LIST.capacity()));
 	}
-	if(aMonsterIsMarkedForDeletion)std::erase_if(MONSTER_LIST,[](const std::unique_ptr<Monster>&m){
-		if(m->markedForDeletion)std::erase_if(lockOnTargets.begin(),lockOnTargets.end(),[&](const std::tuple<Monster*,StackCount,MarkTime>&markData){return &*std::get<0>(markData)==m;}) //Marked targets may have dangling pointers, remove them before removing the monsters for good.
+	if(aMonsterIsMarkedForDeletion)std::erase_if(MONSTER_LIST,[&](const std::unique_ptr<Monster>&m){
+		if(m->markedForDeletion)std::erase_if(lockOnTargets,[&](std::tuple<Monster*,StackCount,MarkTime>markData){return std::get<0>(markData)==&*m;}); //Marked targets may have dangling pointers, remove them before removing the monsters for good.
 		return m->markedForDeletion;
 	});
 	aMonsterIsMarkedForDeletion=false;
diff --git a/Adventures in Lestoria/assets/config/audio/events.txt b/Adventures in Lestoria/assets/config/audio/events.txt
index 9bbeede9..23345730 100644
--- a/Adventures in Lestoria/assets/config/audio/events.txt	
+++ b/Adventures in Lestoria/assets/config/audio/events.txt	
@@ -19,6 +19,12 @@ Events
 			# Specify file names, followed by volume %.  Optional min and max pitch adjustment (Defaults are 90%,110%)
 			File[0] = bear_slam.ogg, 70%
 		}
+		Beep
+		{
+			CombatSound = True
+			# Specify file names, followed by volume %.  Optional min and max pitch adjustment (Defaults are 90%,110%)
+			File[0] = beep.ogg, 100%
+		}
 		Bomb Explode
 		{
 			CombatSound = True
diff --git a/Adventures in Lestoria/assets/sounds/beep.ogg b/Adventures in Lestoria/assets/sounds/beep.ogg
new file mode 100644
index 00000000..e38b57af
Binary files /dev/null and b/Adventures in Lestoria/assets/sounds/beep.ogg differ