diff --git a/autoload/nerdtree.vim b/autoload/nerdtree.vim
index 63fa5c1..7c5db89 100644
--- a/autoload/nerdtree.vim
+++ b/autoload/nerdtree.vim
@@ -52,11 +52,6 @@ function! nerdtree#completeBookmarks(A,L,P)
     return filter(g:NERDTreeBookmark.BookmarkNames(), 'v:val =~# "^' . a:A . '"')
 endfunction
 
-"FUNCTION: nerdtree#compareBookmarks(dir) {{{2
-function! nerdtree#compareBookmarks(first, second)
-    return a:first.compareTo(a:second)
-endfunction
-
 "FUNCTION: nerdtree#compareNodes(dir) {{{2
 function! nerdtree#compareNodes(n1, n2)
     return a:n1.path.compareTo(a:n2.path)
diff --git a/doc/NERD_tree.txt b/doc/NERD_tree.txt
index 3b7b950..6cbdc61 100644
--- a/doc/NERD_tree.txt
+++ b/doc/NERD_tree.txt
@@ -835,11 +835,15 @@ This is where bookmarks are saved. See |NERDTreeBookmarkCommands|.
 
 ------------------------------------------------------------------------------
                                                      *'NERDTreeBookmarksSort'*
-Values: 0 or 1
+Values: 0, 1, or 2
 Default: 1
 
-If set to 0 then the bookmarks list is not sorted.
-If set to 1 the bookmarks list is sorted.
+This option controls the method by which the list of user bookmarks is
+sorted. When sorted, bookmarks will render in alphabetical order by name.
+
+If set to 0, the bookmarks list is not sorted.
+If set to 1, the bookmarks list is sorted in a case-insensitive manner.
+If set to 2, the bookmarks list is sorted in a case-sensitive manner.
 
 ------------------------------------------------------------------------------
                                                        *'NERDTreeMouseMode'*
diff --git a/lib/nerdtree/bookmark.vim b/lib/nerdtree/bookmark.vim
index 9ca8f6f..8bd95fe 100644
--- a/lib/nerdtree/bookmark.vim
+++ b/lib/nerdtree/bookmark.vim
@@ -19,7 +19,7 @@ function! s:Bookmark.AddBookmark(name, path)
         endif
     endfor
     call add(s:Bookmark.Bookmarks(), s:Bookmark.New(a:name, a:path))
-    if g:NERDTreeBookmarksSort ==# 1
+    if g:NERDTreeBookmarksSort == 1 || g:NERDTreeBookmarksSort == 2
         call s:Bookmark.SortBookmarksList()
     endif
 endfunction
@@ -104,17 +104,34 @@ function! s:Bookmark.CacheBookmarks(silent)
                 call nerdtree#echo(invalidBookmarksFound . " invalid bookmarks were read. See :help NERDTreeInvalidBookmarks for info.")
             endif
         endif
-        if g:NERDTreeBookmarksSort ==# 1
+        if g:NERDTreeBookmarksSort == 1 || g:NERDTreeBookmarksSort == 2
             call s:Bookmark.SortBookmarksList()
         endif
     endif
 endfunction
 
-" FUNCTION: Bookmark.compareTo(otherbookmark) {{{1
-" Compare these two bookmarks for sorting purposes
-function! s:Bookmark.compareTo(otherbookmark)
-    return a:otherbookmark.name < self.name
+" FUNCTION: Bookmark.CompareBookmarksByName(firstBookmark, secondBookmark) {{{1
+" Class method that indicates the relative position of two bookmarks when
+" placed in alphabetical order by name. Case-sensitivity is determined by an
+" option. Supports the "s:Bookmark.SortBookmarksList()" method.
+function! s:Bookmark.CompareBookmarksByName(firstBookmark, secondBookmark)
+    let l:result = 0
+    if g:NERDTreeBookmarksSort == 1
+        if a:firstBookmark.name <? a:secondBookmark.name
+            let l:result = -1
+        elseif a:firstBookmark.name >? a:secondBookmark.name
+            let l:result = 1
+        endif
+    elseif g:NERDTreeBookmarksSort == 2
+        if a:firstBookmark.name <# a:secondBookmark.name
+            let l:result = -1
+        elseif a:firstBookmark.name ># a:secondBookmark.name
+            let l:result = 1
+        endif
+    endif
+    return l:result
 endfunction
+
 " FUNCTION: Bookmark.ClearAll() {{{1
 " Class method to delete all bookmarks.
 function! s:Bookmark.ClearAll()
@@ -240,10 +257,10 @@ function! s:Bookmark.setPath(path)
 endfunction
 
 " FUNCTION: Bookmark.SortBookmarksList() {{{1
-" Class method that sorts the global list of bookmarks by name.
+" Class method that sorts the global list of bookmarks alphabetically by name.
+" Note that case-sensitivity is determined by a user option.
 function! s:Bookmark.SortBookmarksList()
-    let CompareFunc = function("nerdtree#compareBookmarks")
-    call sort(s:Bookmark.Bookmarks(), CompareFunc)
+    call sort(s:Bookmark.Bookmarks(), s:Bookmark.CompareBookmarksByName)
 endfunction
 
 " FUNCTION: Bookmark.str() {{{1