diff --git a/plugin/fzf.vim b/plugin/fzf.vim
index 9cebed48..ee2ee906 100644
--- a/plugin/fzf.vim
+++ b/plugin/fzf.vim
@@ -978,13 +978,13 @@ function! s:popup(opts) abort
 
   " Use current window size for positioning relatively positioned popups
   let columns = relative ? winwidth(0) : &columns
-  let lines = relative ? winheight(0) : &lines
+  let lines = relative ? winheight(0) : (&lines - has('nvim'))
 
   " Size and position
   let width = min([max([8, a:opts.width > 1 ? a:opts.width : float2nr(columns * a:opts.width)]), columns])
-  let height = min([max([4, a:opts.height > 1 ? a:opts.height : float2nr(lines * a:opts.height)]), lines - has('nvim')])
-  let row = float2nr(yoffset * (lines - height)) + (relative ? win_screenpos(0)[0] : 0)
-  let col = float2nr(xoffset * (columns - width)) + (relative ? win_screenpos(0)[1] : 0)
+  let height = min([max([4, a:opts.height > 1 ? a:opts.height : float2nr(lines * a:opts.height)]), lines])
+  let row = float2nr(yoffset * (lines - height)) + (relative ? win_screenpos(0)[0] - 1 : 0)
+  let col = float2nr(xoffset * (columns - width)) + (relative ? win_screenpos(0)[1] - 1 : 0)
 
   " Managing the differences
   let row = min([max([0, row]), &lines - has('nvim') - height])