diff --git a/autoload/fugitive.vim b/autoload/fugitive.vim
index 9b6363e..09a599f 100644
--- a/autoload/fugitive.vim
+++ b/autoload/fugitive.vim
@@ -1007,7 +1007,7 @@ function! s:StdoutToFile(out, cmd, ...) abort
     throw 'fugitive: Vim 8 or higher required to use ' . &shell
   else
     let cmd = fugitive#ShellCommand(a:cmd)
-    return s:SystemError(' (' . cmd . ' >' . (len(a:out) ? a:out : '/dev/null') . ') ')
+    return call('s:SystemError', [' (' . cmd . ' >' . (len(a:out) ? a:out : '/dev/null') . ') '] + a:000)
   endif
 endfunction