diff --git a/README.md b/README.md
index 64de4b2..4c97390 100644
--- a/README.md
+++ b/README.md
@@ -588,17 +588,9 @@ PS1=$PS1'\[$(vterm_prompt_end)\]'
 For `fish`, put this in your `~/.config/fish/config.fish`:
 
 ```fish
-function vterm_prompt_end;
+function vterm_prompt_end --on-variable PWD
     vterm_printf '51;A'(whoami)'@'(hostname)':'(pwd)
 end
-functions --copy fish_prompt vterm_old_fish_prompt
-function fish_prompt --description 'Write out the prompt; do not replace this. Instead, put this at end of your file.'
-    # Remove the trailing newline from the original prompt. This is done
-    # using the string builtin from fish, but to make sure any escape codes
-    # are correctly interpreted, use %b for printf.
-    printf "%b" (string join "\n" (vterm_old_fish_prompt))
-    vterm_prompt_end
-end
 ```
 
 Here we are using the function `vterm_printf` that we have discussed above, so make