diff --git a/src/indent.c b/src/indent.c

index 77d8b0a..9830685 100644

--- a/src/indent.c

+++ b/src/indent.c

@@ -1284,6 +1284,8 @@ change_indent(

 		new_cursor_col += (*mb_ptr2len)(ptr + new_cursor_col);

 	    else

 		++new_cursor_col;

+	    if (ptr[new_cursor_col] == NUL)

+		break;

 	    vcol += lbr_chartabsize(ptr, ptr + new_cursor_col, (colnr_T)vcol);

 	}

 	vcol = last_vcol;

diff --git a/src/testdir/test_vartabs.vim b/src/testdir/test_vartabs.vim

index 0ff1ea8..a613510 100644

--- a/src/testdir/test_vartabs.vim

+++ b/src/testdir/test_vartabs.vim

@@ -419,4 +419,17 @@ func Test_varsofttabstop()

   close!

 endfunc

+func Test_vartabstop_latin1()

+  let save_encoding = &encoding

+  new

+  set encoding=iso8859-1

+  set compatible linebreak list revins smarttab

+  set vartabstop=400

+  exe "norm i00\t\<C-D>"

+  bwipe!

+  let &encoding = save_encoding

+  set nocompatible linebreak& list& revins& smarttab& vartabstop&

+endfunc

+

+

 " vim: shiftwidth=2 sts=2 expandtab