diff --git a/autoload/vimtex/view/common.vim b/autoload/vimtex/view/common.vim
index 33208b9..43265a5 100644
--- a/autoload/vimtex/view/common.vim
+++ b/autoload/vimtex/view/common.vim
@@ -26,6 +26,16 @@ function! vimtex#view#common#use_temp_files_p(viewer) " {{{1
   return a:viewer
 endfunction
 
+" }}}1
+function! vimtex#view#common#not_readable(output) " {{{1
+  if !filereadable(a:output)
+    call vimtex#echo#warning('viewer can not read PDF file!')
+    return 1
+  else
+    return 0
+  endif
+endfunction
+
 " }}}1
 
 let s:xwin_template = {}
diff --git a/autoload/vimtex/view/general.vim b/autoload/vimtex/view/general.vim
index be633b0..55b2add 100644
--- a/autoload/vimtex/view/general.vim
+++ b/autoload/vimtex/view/general.vim
@@ -52,13 +52,13 @@ function! s:general.view(file) dict " {{{1
 
     " Only copy files if they don't exist
     if g:vimtex_view_use_temp_files
-          \ && s:output_not_readable(outfile)
+          \ && vimtex#view#common#not_readable(outfile)
       call self.copy_files()
     endif
   else
     let outfile = a:file
   endif
-  if s:output_not_readable(outfile) | return | endif
+  if vimtex#view#common#not_readable(outfile) | return | endif
 
   " Parse options
   let opts = g:vimtex_view_general_options
@@ -96,15 +96,4 @@ endfunction
 
 " }}}1
 
-function! s:output_not_readable(output) " {{{1
-  if !filereadable(a:output)
-    call vimtex#echo#warning('viewer can not read PDF file!')
-    return 1
-  else
-    return 0
-  endif
-endfunction
-
-" }}}1
-
 " vim: fdm=marker sw=2
diff --git a/autoload/vimtex/view/mupdf.vim b/autoload/vimtex/view/mupdf.vim
index d06620d..b57cc8c 100644
--- a/autoload/vimtex/view/mupdf.vim
+++ b/autoload/vimtex/view/mupdf.vim
@@ -83,7 +83,7 @@ function! s:mupdf.reverse_search() dict " {{{1
   if !executable('synctex') | return | endif
 
   let outfile = b:vimtex.out()
-  if s:output_not_readable(outfile) | return | endif
+  if vimtex#view#common#not_readable(outfile) | return | endif
 
   if !self.xwin_exists()
     call vimtex#echo#warning('reverse search failed (is MuPDF open?)')