diff --git a/asciiquarium_ng.py b/asciiquarium_ng.py
index aceef4d..0a9fa86 100755
--- a/asciiquarium_ng.py
+++ b/asciiquarium_ng.py
@@ -27,6 +27,8 @@ HIDE_CUR = "\033[?25l"
 SHOW_CUR = "\033[?25h"
 ALT_ON   = "\033[?1049h"
 ALT_OFF  = "\033[?1049l"
+WRAP_OFF = "\033[?7l"   # disable auto-wrap (prevents scrollback on last-col write)
+WRAP_ON  = "\033[?7h"   # re-enable auto-wrap
 
 def _fg(r, g, b): return f"\033[38;2;{r};{g};{b}m"
 def _go(row, col): return f"\033[{row+1};{col+1}H"
@@ -1560,7 +1562,7 @@ def main():
     signal.signal(signal.SIGWINCH, on_resize)
 
     fd = sys.stdout.fileno()
-    os.write(fd, (ALT_ON + HIDE_CUR + "\033[2J\033[H").encode())
+    os.write(fd, (ALT_ON + HIDE_CUR + WRAP_OFF + "\033[2J\033[H").encode())
 
     try:
         TICK = 0.1 / cfg.speed
@@ -1598,7 +1600,7 @@ def main():
         pass
     finally:
         inp.restore()
-        os.write(fd, (SHOW_CUR + ALT_OFF + RESET).encode())
+        os.write(fd, (SHOW_CUR + WRAP_ON + ALT_OFF + RESET).encode())
 
 
 if __name__ == '__main__':