diff --git a/.travis.yml b/.travis.yml
index 1309d07..974253e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,13 @@
 language: vim
 
 install:
-  - sudo add-apt-repository -y ppa:pi-rho/dev
+  - travis_retry sudo add-apt-repository -y ppa:pi-rho/dev
   # # Not for Precise.. :/
-  # # - sudo add-apt-repository -y ppa:pkg-vim/vim-daily
-  - sudo apt-get update
+  # # - travis_retry sudo add-apt-repository -y ppa:pkg-vim/vim-daily
+  - travis_retry sudo apt-get update
 
-  - sudo apt-get install -y tmux
-  # - hg clone https://vim.googlecode.com/hg vim
+  - travis_retry sudo apt-get install -y tmux
+  # - travis_retry hg clone https://vim.googlecode.com/hg vim
   # - ( cd vim && sudo make install )
 
 before_script:
diff --git a/plugin/diminactive.vim b/plugin/diminactive.vim
index 64e1cd8..3c30581 100644
--- a/plugin/diminactive.vim
+++ b/plugin/diminactive.vim
@@ -504,23 +504,21 @@ fun! s:Setup(...)
       autocmd TabEnter   * call s:Debug('EVENT: TabEnter')
             \ | call s:SetupWindows()
 
-      fun! s:get_tmux_window()
-        return get(systemlist('tmux display -p "#{window_id}"'), 0, '')
-      endfun
       fun! s:handle_focus_event(event) abort
         if len($TMUX)
           " Skip focus events on tmux when moving to or coming from another
           " window.
           " The tmux command for the FocusLost event will have the new
           " window/pane information already.
-          let l:cur_tmux_win = s:get_tmux_window()
-          if a:event == 'FocusGained'
-            let s:tmux_window = l:cur_tmux_win
+          let cur_tmux_win = get(systemlist(
+                \ 'tmux display -p "#{window_id}"'), 0, '')
+          if a:event ==# 'FocusGained'
+            let s:tmux_window = cur_tmux_win
           else
-            let s:tmux_focuslost_skipped = (l:cur_tmux_win != s:tmux_window)
+            let s:skip_focuslost = (cur_tmux_win != get(s:, 'tmux_window', 0))
           endif
-          if get(s:, 'tmux_focuslost_skipped', 0)
-            call s:Debug('tmux: skipping '.a:event.', because of differnt window.')
+          if get(s:, 'skip_focuslost', 0)
+            call s:Debug('tmux: skipping '.a:event.', because of different window.')
             return
           endif
         endif