diff --git a/.tmux.conf b/.tmux.conf
index 14de9f0..25ded50 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -142,16 +142,8 @@ run -b 'tmux bind -T copy-mode-vi H send -X start-of-line 2> /dev/null || true'
 run -b 'tmux bind -t vi-copy L end-of-line 2> /dev/null || true'
 run -b 'tmux bind -T copy-mode-vi L send -X end-of-line 2> /dev/null || true'
 
-# copy to OS clipboard with OSC 52 escape sequence
+# copy to OS clipboard
 bind y run -b 'cut -c3- ~/.tmux.conf | sh -s _copy #{pane_tty}'
-# copy to Mac OSX clipboard
-if -b 'command -v reattach-to-user-namespace > /dev/null 2>&1' 'bind y run -b "tmux save-buffer - | reattach-to-user-namespace pbcopy"'
-# copy to X11 clipboard
-if -b 'command -v xsel > /dev/null 2>&1' 'bind y run -b "tmux save-buffer - | xsel -i -b"'
-if -b '! command -v xsel > /dev/null 2>&1 && command -v xclip > /dev/null 2>&1' 'bind y run -b "tmux save-buffer - | xclip -i -selection clipboard >/dev/null 2>&1"'
-# copy to Windows clipboard
-if -b 'command -v clip.exe > /dev/null 2>&1' 'bind y run -b "tmux save-buffer - | clip.exe"'
-if -b '[ -c /dev/clipboard ]' 'bind y run -b "tmux save-buffer - > /dev/clipboard"'
 
 
 # -- buffers -------------------------------------------------------------------
@@ -630,7 +622,8 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #
 # _copy() {
 #   tty="$SSH_TTY"
-#   tty=${1:-$(tmux display -p '#{pane_tty}')}
+#   tty=${tty:-$1}
+#   tty=${tty:-$(tmux display -p '#{pane_tty}')}
 #   buffer=${2:-$(tmux save-buffer -)}
 #
 #   if [ "$tty" != "$SSH_TTY" ]; then