diff --git a/autoload/sy/util.vim b/autoload/sy/util.vim
index 09d3137..32dec25 100644
--- a/autoload/sy/util.vim
+++ b/autoload/sy/util.vim
@@ -117,7 +117,7 @@ function! sy#util#popup_close() abort
   endif
 endfunction
 
-function! sy#util#popup_create(hunkdiff, ...) abort
+function! sy#util#popup_create(hunkdiff) abort
   let max_width = 100
   let max_height = 16
   let width = max(map(copy(a:hunkdiff), {_, v -> len(v)})) + 1