monster tree cosmetix

diff --git a/src/game/g_monsters.pas b/src/game/g_monsters.pas
index 9f395fdde5dc474ab1ef27649f64d3b6ea88eaef..1f1e71183c52b302e6b3f33927bc405c799506c8 100644 (file)
--- a/src/game/g_monsters.pas
+++ b/src/game/g_monsters.pas
@@ -1932,7 +1932,7 @@ begin
     {$IF DEFINED(D2F_DEBUG)}
     e_WriteLog(Format('monster #%d(%u): removed from tree; nodeid=%d', [arrIdx, UID, treeNode]), MSG_NOTIFY);
     {$ENDIF}
-    monsTree.removeObject(treeNode);
+    if monsTree.isValidId(treeNode) then monsTree.removeObject(treeNode);
   end;
 
   if (arrIdx <> -1) then