diff --git a/plugin/bullets.vim b/plugin/bullets.vim
index 4be95d6..84908c6 100644
--- a/plugin/bullets.vim
+++ b/plugin/bullets.vim
@@ -585,7 +585,8 @@ command! InsertNewBullet call <SID>insert_new_bullet()
 " Helper for Colon Indent
 "   returns 1 if current line ends in a colon, else 0
 fun! s:line_ends_in_colon(lnum)
-  return getline(a:lnum)[strlen(getline(a:lnum))-1:] ==# ':'
+  let l:last_char_nr = strgetchar(getline(a:lnum), strcharlen(getline(a:lnum))-1)
+  return l:last_char_nr == 65306 || l:last_char_nr == 58
 endfun
 " --------------------------------------------------------- }}}
 
diff --git a/spec/nested_bullets_spec.rb b/spec/nested_bullets_spec.rb
index a20b44e..827f7e8 100644
--- a/spec/nested_bullets_spec.rb
+++ b/spec/nested_bullets_spec.rb
@@ -582,6 +582,12 @@
       vim.type 'this bullet is indented'
       vim.feedkeys '\<cr>'
       vim.type 'this bullet is also indented'
+      vim.feedkeys '\<cr>\<C-d>'
+      vim.type 'this is the third bullet that ends with a fullwidth colon：'
+      vim.feedkeys '\<cr>'
+      vim.type 'this bullet is indented'
+      vim.feedkeys '\<cr>'
+      vim.type 'this bullet is also indented'
       vim.write
 
       file_contents = IO.read(filename)
@@ -592,6 +598,9 @@
           b. this is the second bullet:
           \ti. this bullet is indented
           \tii. this bullet is also indented
+          c. this is the third bullet that ends with a fullwidth colon：
+          \ti. this bullet is indented
+          \tii. this bullet is also indented
       TEXT
     end
   end