From 1642f29df89dad5bc450dd0ee018210070ca7861 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Tue, 18 Jan 2022 22:02:04 -0500
Subject: [PATCH] fix critical bug when removing systems

---
 src/engine/engine.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index 424747338..6423d0c80 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -2750,7 +2750,7 @@ bool DivEngine::removeSystem(int index) {
   song.system[index]=DIV_SYSTEM_NULL;
   song.systemLen--;
   for (int i=index; i<song.systemLen; i++) {
-    song.system[index]=song.system[index+1];
+    song.system[i]=song.system[i+1];
   }
   recalcChans();
   isBusy.unlock();