diff --git a/bundle/vim-chat/autoload/chat/windows.vim b/bundle/vim-chat/autoload/chat/windows.vim
index b18ef487c..6fa2aa8e8 100644
--- a/bundle/vim-chat/autoload/chat/windows.vim
+++ b/bundle/vim-chat/autoload/chat/windows.vim
@@ -115,10 +115,10 @@ function! chat#windows#open() abort
       call s:enter()
     elseif char ==# "\<LeftMouse>"
       let mouse_left_lnum = v:mouse_lnum
-      let mouse_left_col = v:mouse_col
+      let mouse_left_col = getmousepos().column
     elseif char ==# "\<LeftRelease>" || char ==# "\x80\xfd-"
       let mouse_left_release_lnum = v:mouse_lnum
-      let mouse_left_relsese_col = v:mouse_col
+      let mouse_left_relsese_col = getmousepos().column
       let selected_text = s:high_pso(mouse_left_lnum, mouse_left_col, mouse_left_release_lnum, mouse_left_relsese_col)
     elseif char ==# "\<C-c>"
       " copy select text
@@ -270,8 +270,8 @@ endfunction
 function! s:high_pso(l, c, rl, rc) abort
   let l = a:l
   let rl = a:rl
-  let c = strlen(strcharpart(getline(l), 0, a:c)) + 1
-  let rc = strlen(strcharpart(getline(rl), 0, a:rc)) + 1
+  let c = strlen(strpart(getline(l), 0, a:c)) + 1
+  let rc = strlen(strpart(getline(rl), 0, a:rc)) + 1
   call clearmatches()
   let selected_text = []
   if l ==# rl && c == rc