diff --git a/Source/monster.cpp b/Source/monster.cpp
index 3f61ebfab..bdfb1b180 100644
--- a/Source/monster.cpp
+++ b/Source/monster.cpp
@@ -4654,7 +4654,11 @@ void MAI_Lachdanan(int i)
 	MonsterStruct *Monst;
 
 	if ((DWORD)i >= MAXMONSTERS)
+#ifdef HELLFIRE
+		return;
+#else
 		app_fatal("MAI_Lachdanan: Invalid monster %d", i);
+#endif
 
 	Monst = &monster[i];
 	if (monster[i]._mmode != MM_STAND) {