diff --git a/autoload/fugitive.vim b/autoload/fugitive.vim
index ac62467..3b3db38 100644
--- a/autoload/fugitive.vim
+++ b/autoload/fugitive.vim
@@ -2533,8 +2533,8 @@ function! fugitive#BufReadStatus() abort
     nnoremap <buffer> <silent> <C-P> :<C-U>execute <SID>StagePrevious(v:count1)<CR>
     nnoremap <buffer> <silent> - :<C-U>silent execute <SID>StageToggle(line('.'),line('.')+v:count1-1)<CR>
     xnoremap <buffer> <silent> - :<C-U>silent execute <SID>StageToggle(line("'<"),line("'>"))<CR>
-    nnoremap <buffer> <silent> a :<C-U>let b:fugitive_display_format += 1<Bar>exe <SID>BufReadIndex()<CR>
-    nnoremap <buffer> <silent> i :<C-U>let b:fugitive_display_format -= 1<Bar>exe <SID>BufReadIndex()<CR>
+    nnoremap <buffer> <silent> a :<C-U>let b:fugitive_display_format += 1<Bar>exe fugitive#BufReadIndex()<CR>
+    nnoremap <buffer> <silent> i :<C-U>let b:fugitive_display_format -= 1<Bar>exe fugitive#BufReadIndex()<CR>
     nnoremap <buffer> <silent> C :<C-U>Gcommit<CR>:echohl WarningMsg<Bar>echo ':Gstatus C is deprecated in favor of cc'<Bar>echohl NONE<CR>
     nnoremap <buffer> <silent> cA :<C-U>Gcommit --amend --reuse-message=HEAD<CR>:echohl WarningMsg<Bar>echo ':Gstatus cA is deprecated in favor of ce'<CR>
     nnoremap <buffer> <silent> ca :<C-U>Gcommit --amend<CR>
@@ -2704,8 +2704,8 @@ function! fugitive#BufReadObject() abort
       endif
       if b:fugitive_type !=# 'blob'
         setlocal filetype=git foldmethod=syntax
-        nnoremap <buffer> <silent> a :<C-U>let b:fugitive_display_format += v:count1<Bar>exe <SID>BufReadObject()<CR>
-        nnoremap <buffer> <silent> i :<C-U>let b:fugitive_display_format -= v:count1<Bar>exe <SID>BufReadObject()<CR>
+        nnoremap <buffer> <silent> a :<C-U>let b:fugitive_display_format += v:count1<Bar>exe fugitive#BufReadObject()<CR>
+        nnoremap <buffer> <silent> i :<C-U>let b:fugitive_display_format -= v:count1<Bar>exe fugitive#BufReadObject()<CR>
       else
         call fugitive#MapJumps()
       endif