diff --git a/home/.config/fish/config.fish b/home/.config/fish/config.fish
index d1ad8aa..89853b5 100644
--- a/home/.config/fish/config.fish
+++ b/home/.config/fish/config.fish
@@ -23,7 +23,7 @@ function __prepend_sudo
 end
 
 bind \e\e __prepend_sudo
-bind \c@ accept-autosuggestion
+bind ctrl-space accept-autosuggestion  # Fish 4.0+ 语法
 
 set -gx FZF_DEFAULT_OPTS '--height=50% --layout=reverse --border --preview-window=right:60%'
 set -gx FZF_DEFAULT_COMMAND 'fd --type f --hidden --follow --exclude .git'